400W programmable 3U DC electronic load with 0–500V, 0–8A autoranging input, CV/CC/CP/CR modes, and 4.3″ TFT touch panel. Built‑in function generator (sine, triangle, rectangle, arbitrary, ramp), battery test, and MPPT tracking. Remote control via galvanically isolated analog (0–5V/10V), USB, and Ethernet (ModBus/SCPI). Compact 276×103×355mm desktop housing with optional 19″ rack‑mount kit. Ideal for high‑voltage R&D, ATE, and solar simulation.

Output Current

0-8A

Output Power

400W

Output Voltage

0-500V

Type

Characteristic Curve

U/I/P autoranging

External Control

Analogue 0-5V/0-10V, USB, LAN, 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 for power supply testing? Input is 0–500 V, rated 0–8 A.
Rated power: 400 W peak and steady (autoranging).
Operates in CV, CC, CP, CR modes with automatic crossover.
AC supply: 90–264 VAC, 45–65 Hz; consumption max. 40 W, fuse T 2 A.
Protection: configurable OVP (0–515 V), OCP (0–8.8 A), OPP (0–440 W), plus OT and PF.
Dimensions: 276 × 103 × 355 mm; weight approx. 6.5 kg; optional 2U rack‑mount kit.

What It Is + Why It Matters

High‑precision programmable DC electronic load for R&D, production testing, and high‑voltage applications.
Autoranging (U/I/P) allows maximum flexibility – a single unit can handle a wide range of voltage/current combinations.
Integrated function generator (sine, triangle, rectangle, trapezoid, DIN 40839, arbitrary, ramp) and resistance simulation eliminate external waveform sources.
Battery discharge test (static/dynamic) with Ah/Wh counters and MPPT tracking (4 modes) for solar panel characterisation.
Galvanically isolated analog 0‑5/10V interface plus USB and Ethernet (ModBus RTU/SCPI) ready for ATE integration.

Note: For models with nominal voltage ≥200 V, a built‑in discharge circuit ensures safe voltage reduction after DC input is switched off.

Key Specs

DC Input: 0–500 V max., max. allowed 550 V; min. voltage for full current ≈ 6.5 V.
Current: 0–8 A max., adjustable 0–8.16 A; accuracy ≤0.2% I_Max.
Power: 400 W peak and steady; accuracy <0.5% P_Steady.
Resistance: 3–1020 Ω; accuracy ≤1% R_Max + 0.3% I_Max.
Voltage accuracy: ≤0.1% U_Max; stability at ΔI <0.05% U_Max; remote sensing compensation max. 5% U_Max.
Display: 4.3″ colour TFT touch panel (capacitive, gorilla glass), 480×272 pt.
Interfaces: USB‑B (rear, CDC), USB‑A (front, data/logging), Ethernet (10/100 MBit, SCPI/ModBus), 15‑pole Sub‑D analog (0‑5/10V, galvanically isolated).
Function generator: sine, triangle, rectangle, trapezoid, DIN 40839, arbitrary (99 sequences), ramp; plus battery test and MPPT.
Standards: EN 60950:2006 + amendments; EN 61000‑6‑3:2011, EN 61000‑6‑1:2007.

Integration & Installation

Desktop enclosure with carrying handle/tilt stand; can be installed in a 19″ rack using the optional 2U mounting frame (order nr. 10 400 111).
Front panel: DC input terminals (clamp & plug, max. 32 A on 4 mm), USB‑A, remote sense, control panel.
Rear panel: AC inlet with fuse (T 2 A), USB‑B, Ethernet, 15‑pole Sub‑D analog interface.
Cooling: temperature‑controlled fans; leave ≥30 cm clearance behind the unit.
DC wiring: for 8 A, recommended cable cross section ≥0.75 mm² (AWG18) up to 5 m.

Best for / Not for

Best for: high‑voltage power supply testing, DC‑DC converter validation, battery discharge profiling up to 500 V, solar panel MPPT characterisation, production ATE, and R&D laboratories.
Not for: sources exceeding 500 V / 8 A / 400 W; series connection of loads not permitted.

Selection Checklist + RFQ

Confirm source voltage ≤ 500 V, current ≤ 8 A, sustained power ≤ 400 W.
Select regulation mode (CV/CC/CP/CR) and set OVP/OCP/OPP thresholds for source protection.
Choose remote interface: USB, Ethernet (ModBus/SCPI), or galvanically isolated analog (0‑5/10V).
If rack mounting is required, order the optional 2U mounting frame (10 400 111).
For battery or MPPT testing, verify that the built‑in function parameters match your test profile.
Ensure adequate ventilation and observe the minimum 6.5 V input for full current draw.