EA-EL 9200-140 B 3U Programmable Electronic DC Load from EA Elektro Automatik EL 9000 B Series

The EA-EL 9200-140 B 3U is a versatile programmable electronic DC load from the EA-EL 9000 B Series, engineered for mid-range voltage applications including battery discharge testing, photovoltaic MPP tracking, and fuel cell characterization. This 19-inch rack-mountable unit (3U height) provides an input voltage range of 0-200 V DC and input current up to 140 A, with a maximum power handling of 4000 W (derated to 3000 W at 21°C ambient and 2400 W at 35°C). It supports four operation modes: constant voltage (CV), constant current (CC), constant power (CP), and constant resistance (CR), all regulated by an FPGA-based digital control circuit for high precision and fast transient response (rise time ≤50 μs). The built-in color TFT touch panel enables intuitive manual operation, while advanced functions include an arbitrary waveform generator, XY table for nonlinear internal resistance simulation, battery test mode with Ah counting, and MPP tracking for solar inverter testing. Safety protections include adjustable OVP, OCP, OPP, and OTP. The unit features galvanically isolated analog and USB interfaces, a master-slave bus for parallel connection (expandable up to 72 kW in cabinets), and a slot for optional digital interface modules (CAN, CANopen, Ethernet, Profibus, Profinet, RS232, EtherCAT, ModBus TCP). Remote control is supported via SCPI and ModBus RTU/TCP commands, with LabVIEW VIs and Windows software included. With high accuracy (voltage ≤0.1%, current ≤0.2%, power ≤0.5%) and robust construction, the EA-EL 9200-140 B 3U is ideal for R&D, incoming inspection, and automated test systems requiring reliable DC load capabilities.

Key Features

• Mid-Voltage Range: 0-200 V DC input, 0-140 A current, 4000 W max power in 3U 19" form factor (derated to 3000 W @21°C, 2400 W @35°C).
• Four Operation Modes: CV, CC, CP, CR with FPGA-based digital control for accuracy and speed (rise time ≤50 μs).
• Integrated Function Generator: Generate arbitrary curves and simulate nonlinear internal resistance using XY table.
• Battery Test & MPP Tracking: Dedicated modes for constant current/constant resistance discharge with Ah measurement, plus MPPT analysis for photovoltaic applications.
• Flexible Connectivity: Built-in USB and analog interface (0-5V/0-10V, galvanically isolated), plus slot for fieldbus modules (CAN, Ethernet, Profinet, EtherCAT, etc.).
• Parallel Operation & Scalability: Master-slave bus allows multiple units to be paralleled, achieving up to 72 kW total power in cabinets.
• User-Friendly HMI: Color TFT touch panel with multilingual support (German, English, Russian, Chinese) and two rotary knobs.
• Comprehensive Protection: Adjustable OVP, OCP, OPP, and overtemperature shutdown for safe operation.
• Remote Control & Software: SCPI and ModBus RTU/TCP command set, LabVIEW VIs, and Windows control software with data logging to USB.