3000W 2U energy-recovery programmable DC electronic load with 0–1000V, 0–10A autoranging input and up to 95% 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. Built‑in discharge circuit (output <60V within ≤10s) ensures safe high‑voltage operation. 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‑voltage industrial testing with reduced energy costs.

Output Current

0-10A

Output Power

3000W

Output Voltage

0-1000V

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 1000 V DC load that recovers energy? Input is 0–1000 V, rated 0–10 A.
Rated power: 3000 W (1500 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.
Built‑in discharge circuit reduces output to <60 V within ≤10 s after DC off – essential for 1000 V safety.
AC supply: 110–240 VAC, 45–65 Hz, single‑phase (derates to 1500 W at 110–127 VAC).
Protection: OTP, OVP (0–1100 V), OCP (0–11 A), OPP (0–3300 W), PF, SF, MSP.
Resistance range: 3–6000 Ω; min. voltage for full current ≈ 4 V.
Weight approx. 12.7 kg; dimensions 19″ × 2U × 462 mm enclosure, total depth min. 559 mm.

What It Is + Why It Matters

Highest‑voltage regenerative electronic DC load in the 2U series – recovers up to 95 % of consumed energy, drastically cutting cooling and operational costs for high‑voltage test environments.
1000 V capability with autoranging output covers both high‑voltage/low‑current and moderate‑voltage/higher‑current test scenarios with a single unit.
Built‑in discharge circuit rapidly reduces output voltage after shutdown – critical for operator safety at 1000 V.
Integrated function generator (sine, triangle, rectangle, trapezoid, DIN 40839, ramp, arbitrary up to 99 points, XY table) plus battery test and MPPT tracking eliminate 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 integration.

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 discharge circuit provides essential safety at 1000 V – always verify voltage decay before handling connections.

Key Specs

DC Input: 0–1000 V, 0–10 A, 3000 W autoranging (1500 W derated at 110–127 VAC).
Resistance range: 3–6000 Ω; min. voltage for I_Max: ≈4 V.
Energy recovery efficiency: up to 95 % – highest in the ELR 10000 2U series.
DC output capacity: 60 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.
Discharge circuit: output <60 V within ≤10 s after DC off (standard for models ≥200 V).
Insulation: DC± to PE ±1500 V DC / +2000 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 61010‑1, IEC 61010‑1, UL 61010‑1, EN 55011 Class B, FCC Part 15B 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 10 A, use ≥0.75 mm² (AWG18) 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‑voltage power supply testing up to 1000 V, DC‑DC converter validation, photovoltaic inverter simulation, insulation testing, semiconductor burn‑in, and automated ATE where energy savings, 1000 V capability, and industrial bus integration are required.
Not for: applications needing input voltage above 1000 V, current beyond 10 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 ≤ 1000 V, current ≤ 10 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 10 A continuous, use ≥0.75 mm² (AWG18) DC cables with ring lugs for the copper blade terminals.
If master-slave operation is planned, ensure all units have matching 1000 V ratings and prepare BNC and CAT5 cables.
For 1000 V safety, always verify the discharge circuit is operational and wait ≥10 s before handling DC connections.
Plan rack depth (≥559 mm total) and cooling; the 95 % energy‑recovery efficiency minimises HVAC requirements.