Description

Series EA-ELR 9000 offers electronic DC loads with energy recovery, along with a good selection of voltage, current and power ratings for a multitude of applications. These devices incorporate the four common regulation modes constant voltage (CV), constant current (CC), constant power (CP) and constant resistance (CR). The FPGA based control circuit provides additional features, such as a function generator and a table based regulation circuit for the simulation of non-linear internal resistances.

The energy recovery function converts the supplied DC energy into a synchronous sine current and feeds it back into the local grid, eliminating the usual heat dissipation to a minimum and saving energy costs at the same time. The large color TFT touch panel offers a different and intuitive kind of manual operation, compared to electronic load series of other manufacturers.

Response times for the control via analog or digital interfaces have been improved by the FPGA controlled hardware. In parallel operation of multiple devices, a master-slave bus is used to connect the units to a bigger system where the actual values are totaled and the set values distributed.

Features

• For 208 V (±10%) or 230 V AC supply
• Energy recovery of the supplied DC energy into the local grid
• Galvanically isolated DC input
• Input power ratings: up to 9.3 kW per unit, expandable to 297 kW
• Input voltages: up to 1500 V
• Input currents: up to 510 A per unit
• FPGA based digital control
• Multilingual TFT touch panel
• User profiles, true function generator
• Galvanically isolated analog and USB interface
• Extra USB port on the front for USB stick
• Optional, digital, plug & play interfaces or alternatively installed GPIB port
• SCPI command set and ModBus supportSCPI command set and ModBus support