0-2000V input voltage, 0-20A current, and 15000W autoranging power with regenerative energy recovery up to 95.5% in a compact 3U 19" rack chassis. Built-in function generator, battery test, MPPT tracking, internal resistance simulation, touchscreen HMI, analog & digital remote control, master-slave parallel up to 960kW, and full protections (OVP/OCP/OPP/OT). Ideal for ultra-high-voltage battery pack testing, fuel cell stack evaluation, solar inverter characterization, and high-power industrial R&D.

Output Current

0-20A

Output Power

15000W

Output Voltage

0-2000V

Type

Characteristic Curve

U/I/P autoranging

External Control

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

Housing

19" rack

Human Interface

Touch panel & Menu

Special Feature

Function Generator, Resistance

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Description

30-Second Fit Check

Input: 0-2000V, 0-20A, 15000W with true autoranging (U/I/P).
AC input: 380-480V ±10%, 3-phase, 45-66Hz. On 208V input, derates to 9000W.
Energy recovery efficiency: up to 95.5% in sink mode.
Ripple: ≤400mV rms / ≤2400mV 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 resistance mode.
Cooling: Forced air flow front to rear, temperature-controlled fans.

What It Is + Why It Matters

Ultra-high-voltage regenerative electronic load – sinks DC power and feeds back up to 95.5% of absorbed energy to the grid, reducing cooling and electricity costs.
Wide voltage range 0-2000V perfect for EV battery packs (800V class, up to 2000V), fuel cell stacks, and ultra-high-voltage DC sources.
Built-in function generator with sine, triangle, rectangular, trapezoid, arbitrary (99 points), ramp, DIN 40839, plus battery test (static/dynamic discharge) and MPPT tracking (4 modes).
Internal resistance simulation (CR mode) for realistic battery and fuel cell loading.
Master-Slave parallel – up to 64 units for 960kW total system power; true current sharing via Share bus and digital MS bus.
High dynamics: Current rise time ≤2ms (10-90%).

Note: Remote sensing compensates up to 5% of U_Nom. Always use DC terminal covers – hazardous voltage possible (2000V). Check local regulations for grid feed-in (grid protection device may be required).

Key Specs (EA-ELR 12000-20 3U)

Voltage range: 0-2000V (adjustable).
Current range: 0-20A (bidirectional as load only).
Power range: 15000W (peak and steady at 21°C).
Internal resistance range: 3.5Ω – 5300Ω (approx., from spec table).
Min. input voltage for Imax: ≈7.2V.
Rise time (10-90% Inom): ≤2ms; Fall time ≤2ms.
Display accuracy: Voltage ≤0.05% FS, Current ≤0.1% FS.
Insulation: AC input to DC input 3750Vrms; DC minus to PE ±1500V, DC plus to PE +2000V.
Output capacitance: 60μF.
Dimensions (WxHxD): 19" x 3U x 668mm. Weight: ~32.8 kg (72 lb).

Interfaces & Remote Control

Standard digital: USB (rear B) + Ethernet (100M) supporting SCPI and ModBus RTU; USB host (front) for data logging/sequence loading.
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 status.
Optional plug-in modules (IF-AB series): Profibus, ProfiNet, CAN, CANopen, RS232, ModBus TCP, EtherCAT – retrofittable.
Web server on LAN port for configuration and manual SCPI commands.
Remote sense for accurate voltage measurement at source terminals.

Best for / Not for

Best for: Ultra-high-voltage battery pack testing (EV, ESS up to 2000V), fuel cell stack evaluation, solar inverter MPPT characterization, on-board charger (OBC) test, DC-DC converter validation for high voltage, and capacitor bank discharging.
Not for: Series connection of multiple loads (not permitted); source operation (power supply only); low-voltage high-current applications (consider other ELR models).

Selection Checklist + Integration

Confirm source voltage ≤2000V DC and current ≤20A (peak 15000W). Note derating on 208V AC input to 9000W.
DC cable cross-section: For 20A / 5m length, use at least 2.5mm² (AWG13) with insulation rated for 2000V DC (use high-voltage cables).
Mounting: 19" rack, 3U height, allow >30cm rear clearance for airflow.
For master-slave parallel: Connect Share bus (BNC) and MS bus (RJ45 CAT5); terminate ends via internal settings (BIAS/TERM). Up to 64 units.
For energy recovery: Ensure grid connection can accept regenerated power; may require external grid protection device per local regulations (e.g., VDE-AR-N 4105).
For battery test: Use built-in static or dynamic discharge mode with adjustable discharge voltage, time, and capacity thresholds.
For MPPT tracking: Select mode MPP1 (find MPP), MPP2 (track), MPP3 (fast track), or MPP4 (user-defined curve via USB).
For remote sensing: Use supplied sense connector to compensate voltage drop; do not connect NC pins (high-voltage models).
Firmware updates via USB-B and EA Power Control software (included).