Series EL 9000B 2Q 2U conventional DC Electronic Loads
Series EL 9000B 2Q 2U conventional DC Electronic Loads (Linear) 600 W up to 2.4 kW
- Wide AC supply voltage range: 90...264 V, with active PFC
- Input power ratings: 0...600 W up to 0...2400 W
- Input voltages: 0...80 V up to 0...750 V
- Input currents: up to 170 A per unit
- FPGA based control circuit
- Control panel with status LEDs
- Adjustable protections: OVP, OCP, OPP
- Operation modes: CV, CC, CP, CR
- Galvanically isolated interfaces (analog and USB)
- Master-slave bus for parallel connection
- Slot for a wide selection of industrial interface modules
- SCPI command set and ModBus RTU support
- LabView VIs and remote control software (Windows)
General
The series EA-EL 9000 B 2Q offers electronic loads which are primarily designed for the so-called “two-quadrants operation”, also called source- sink principle, which is a combination of a load and a power supply. In this system, the electronic loads care for an improved dynamics regarding output voltage changes of the power supplies.
By default the devices are configured to run with full power and current and minimal voltage, stand-alone or in master-slave. Other parameters can be configured via remote control, for example with the software EA Power Control (also see page 118).
Two-quadrants operation
There is a wide application spectrum for the two-quadrants operation (2Q, 2QO). For example, the regenerated energy of a decelerating motor could be consumed. This protects the motor as well as the source powering the motor against overvoltage. Another example is the end tests of various types of batteries or other kinds of energy storage devices or simulation of their characteristics. A battery can be charged and discharged with a system using 2Q.
When running the loads in parallel to a power supply it can achieve very short voltage fall times. This is done by the loads discharging the typical output capacities of power supplies, resulting in a dynamic voltage progression.
