3000W 2U energy-recovery programmable DC electronic load with 0–80V, 0–120A autoranging input and up to 94% energy recuperation efficiency. Equipped with a 5″ TFT touch panel, built‑in function generator (sine, triangle, rectangle, trapezoid, DIN 40839, ramp, arbitrary, XY table), internal resistance simulation, battery test, and MPPT tracking. Supports master-slave parallel operation (up to 64 units, 192kW total). Includes galvanically isolated analog (0–5/10V), USB, and Ethernet interfaces. Optional plug‑in modules for Profibus, ProfiNet, CAN, CANopen, RS232, ModBus TCP, or EtherCAT. Ideal for high‑current industrial testing with reduced energy costs.

Output Current

0-120A

Output Power

3000W

Output Voltage

0-80V

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

Need a high‑current DC load that saves on energy costs? Input is 0–80 V, rated 0–120 A.
Rated power: 3000 W (1500 W at 110–127 VAC) with autoranging (U/I/P).
Energy recovery: feeds up to 94% of consumed DC energy back into the local grid.
AC supply: 110–240 VAC, 45–65 Hz, single‑phase (derates to 1500 W at 110–127 VAC).
Protection: OTP, OVP (0–88 V), OCP (0–132 A), OPP (0–3300 W), PF, SF, MSP.
Resistance range: 0.02–40 Ω; min. voltage for full current ≈ 0.8 V.
Dimensions: 19″ × 2U × ~500 mm depth; weight approx. 10.5–11 kg.

What It Is + Why It Matters

High‑current regenerative electronic DC load that returns up to 94% of consumed energy to the grid, dramatically reducing cooling requirements and operational costs for high‑power test environments.
Autoranging output stage delivers up to 120 A at lower voltages – a single unit handles diverse load conditions from low‑voltage/high‑current to higher‑voltage/moderate‑current.
Integrated function generator (sine, triangle, rectangle, trapezoid, DIN 40839, ramp, arbitrary up to 99 points, XY table) plus battery test and MPPT tracking eliminate costly external instrumentation.
Master-slave parallel operation supports up to 64 units (192 kW total) with true totaling of actual values and digital bus control – scale your test capability as needed.
Optional industrial interface modules (Profibus, ProfiNet, CAN, CANopen, RS232, ModBus TCP, EtherCAT) plug into the rear slot for direct PLC and industrial network integration.
Built‑in 5" TFT touch panel with gorilla glass, two rotary knobs, and intuitive menu navigation for fast manual setup.

Note: Energy recovery requires a suitable local grid connection. The device automatically derates to 1500 W when running on 110–127 VAC supplies. A grid protection device may be required per local regulations. The DC output capacity of 17280 µF means high inrush; always follow safe connection procedures.

Key Specs

DC Input: 0–80 V, 0–120 A, 3000 W autoranging (1500 W derated at 110–127 VAC).
Resistance range: 0.02–40 Ω; min. voltage for I_Max: ≈0.8 V.
Energy recovery efficiency: up to 94%.
DC output capacity: 17280 µF.
Voltage accuracy: <0.1% FS; load regulation CV <0.05%; stability CV <0.02% (8 h); display accuracy ≤0.05%.
Current accuracy: <0.2% FS; rise/fall time CC ≤10 ms (10–90%); display accuracy ≤0.1%.
Power accuracy: <1% FS.
Insulation: DC± to PE ±600 V DC / +600 V DC; AC‑to‑DC 3750 Vrms.
Display: 5″ colour TFT touch panel (800×480 pt, capacitive, gorilla glass).
Analog interface: 15‑pole D‑Sub, 0‑5/10 V, galvanically isolated; U,I,P,R set & monitor.
Digital interfaces (built‑in): USB (CDC, rear), USB‑A (front, data/logging), Ethernet (100 MBit, SCPI/ModBus RTU).
Optional interfaces: Profibus, ProfiNet, CAN, CANopen, RS232, ModBus TCP, EtherCAT (plug‑in slot).
Master-slave: up to 64 units via RJ45 bus + BNC Share bus; mixed power classes supported.
Function generator: sine, triangle, rectangle, trapezoid, DIN 40839, ramp, arbitrary (99 points), XY table (4096 points).
Special modes: battery test (static/dynamic), MPPT tracking (4 modes), USB data logging, real‑time graph display.
Protection: OVP, OCP, OPP, OTP, PF, MSP, SF. SEMI F47 voltage sag ride‑through available.
Standards: EN 60950, EN 61326, EN 55022 Class B.

Integration & Installation

Standard 19″ rack‑mount, 2U height; DC input on rear panel (copper blades with protective covers).
AC supply: hard‑wired 3‑pole clamp terminal (L, N, PE); rigid connection required. For 120 A, use ≥35 mm² (AWG2) DC cables.
Front panel: 5″ touch display, two rotary knobs with pushbutton, USB‑A, On/Off button with LED status.
Rear panel: DC input, remote sense, Share bus (BNC ×2), master-slave bus (RJ45 ×2), analog interface (D‑Sub), USB‑B, Ethernet, interface module slot, grounding point (PE).
Cooling: temperature‑controlled fans; ensure ≥30 cm clearance behind the unit and adequate rack airflow.
Grid connection: consult local regulations regarding energy feedback; external NS protection device may be required (VDE‑AR‑N 4105/4110, G99, etc.).

Best for / Not for

Best for: high‑current power supply testing, DC‑DC converter validation, battery discharge with energy recovery, fuel cell testing, electrolysis load simulation, semiconductor burn‑in, and automated ATE where energy savings, 120 A capability, and industrial bus integration are required.
Not for: applications needing input voltage above 80 V, current beyond 120 A from a single unit, or sustained power above 3000 W (1500 W at low line). Not suitable for off‑grid or generator supplies.

Selection Checklist + RFQ

Confirm source voltage ≤ 80 V, current ≤ 120 A, sustained power ≤ 3000 W (1500 W at 110–127 VAC).
Verify AC mains compatibility: 110–240 VAC single‑phase; check local grid‑feedback regulations.
Choose remote control method: built‑in analog/USB/Ethernet, or add an optional industrial bus module (Profibus, CAN, etc.).
For high‑current testing, verify DC cable cross‑section (≥35 mm² for 120 A) and use ring lugs for the copper blade terminals.
If master-slave operation is planned, ensure all units have matching 80 V ratings and prepare BNC and CAT5 cables.
For battery test or MPPT, verify built‑in function parameters match your test profiles.
Plan rack depth (≥500 mm) and cooling; the energy‑recovery design reduces HVAC load compared to conventional loads.