1500W 2U energy-recovery programmable DC electronic load with 0–500V, 0–10A autoranging input and up to 95% energy recuperation efficiency. Equipped with a 5″ TFT touch panel, built‑in function generator, internal resistance simulation, battery test, MPPT tracking, and master-slave parallel operation (up to 64 units). 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‑voltage industrial testing and green lab environments.

Output Current

0-10A

Output Power

1500W

Output Voltage

0-500V

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‑voltage DC load that reduces energy costs? Input is 0–500 V, rated 0–10 A.
Rated power: 1500 W (1200 W at 110–127 VAC) with autoranging (U/I/P).
Energy recovery: feeds up to 95% of consumed DC energy back into the local grid.
AC supply: 110–240 VAC, 45–65 Hz, single‑phase (derates at 110–127 VAC).
Built‑in discharge circuit reduces output to <60 V within ≤10 s after DC off.
Protection: OTP, OVP (0–550 V), OCP (0–11 A), OPP (0–1650 W), PF, SF, MSP.
Resistance range: 2–3000 Ω; weight approx. 10.5–11 kg; 2U rack height.

What It Is + Why It Matters

High‑efficiency regenerative electronic DC load that returns energy to the grid instead of dissipating it as heat, significantly lowering cooling costs and enabling greener lab operations.
Autoranging output stage provides up to 500 V or 10 A; one unit covers diverse test conditions without multiple fixed‑range loads.
Integrated function generator (sine, triangle, rectangle, trapezoid, DIN 40839, ramp, arbitrary, XY table) and battery test eliminate external instruments.
Master-slave parallel operation supports up to 64 units (up to 96 kW total), with true totaling of all actual values via digital bus and Share bus.
Optional industrial interface modules (Profibus, ProfiNet, CAN, CANopen, RS232, ModBus TCP, EtherCAT) plug directly into the rear slot for seamless PLC integration.
Galvanically isolated analog 0‑5/10V, USB, and Ethernet are built in as standard.

Note: Energy recovery requires a suitable local grid connection. The device automatically derates to 1200 W when running on 110–127 VAC supplies. An external grid protection device may be required per local regulations.

Key Specs

DC Input: 0–500 V, 0–10 A, 1500 W (autoranging). Resistance: 2–3000 Ω.
Energy recovery efficiency: up to 95%.
Voltage accuracy: <0.1% FS; load regulation CV <0.05%; stability CV <0.02% (8 h).
Current accuracy: <0.2% FS; rise/fall time CC ≤10 ms (10–90%).
Power accuracy: <1% FS.
Discharge circuit: output <60 V within ≤10 s (standard for models ≥200 V).
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), 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.
Special modes: battery test (static/dynamic), MPPT tracking (4 modes), USB data logging.
Protection: OVP, OCP, OPP, OTP, PF, MSP, SF. SEMI F47 voltage sag ride‑through available.
Insulation: 3750 Vrms AC‑to‑DC; DC± to PE ±1500 V / +2000 V.
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 plastic covers).
AC supply: hard‑wired 3‑pole clamp terminal (L, N, PE); rigid connection required for permanent installation.
Front panel: 5″ touch display, two rotary knobs with pushbutton, USB‑A (data/logging), On/Off button.
Rear panel: DC input, remote sense, Share bus (BNC), master-slave bus (RJ45), analog interface (D‑Sub), USB‑B, Ethernet, interface module slot.
Cooling: temperature‑controlled fans; ensure ≥30 cm clearance behind the unit and adequate rack airflow.
Grid connection: consult local regulations regarding energy feedback; an external NS protection device may be required.

Best for / Not for

Best for: high‑voltage power supply testing, DC‑DC converter validation, battery discharge with energy recovery, solar inverter MPPT characterisation, semiconductor burn‑in, and automated ATE where energy savings and industrial bus integration are required.
Not for: applications needing input voltage above 500 V, current beyond 10 A, or sustained power above 1500 W (1200 W at low line). Not suitable for off‑grid or generator supplies.

Selection Checklist + RFQ

Confirm source voltage ≤ 500 V, current ≤ 10 A, sustained power ≤ 1500 W (1200 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.).
If master-slave operation is planned, ensure all units have matching voltage ratings and prepare BNC and CAT5 cables.
For battery test or MPPT, verify that built‑in function parameters match your test profiles.
Plan rack depth (≥500 mm) and cooling; confirm the discharge circuit is operational for safe 500 V handling.