Electronic DC Loads Offer Flexible Load Test Profiles


Intepro Systems introduces the EL 9000 B Series of electronic DC loads offered in 15 models with rated peak power from 1200 to 7200 Watts. The new “B” Series units pack a complete suite of test features and controls, all in a 3U rack panel that is 50 per cent smaller compared to the former models.

An FPGA-based digital function and arbitrary profile generator are provided to enable user-customizable load profiles. The unit features an advanced DSP hardware to offer improved analog and digital interface response time. Current rise time is as fast as 18µsec, (10-90 per cent load) ideal for testing pulsed power supplies. Intuitive manual operation is provided via the unit’s large, color touch panel controls.

Four common regulation modes are offered: constant voltage, constant current, constant resistance and constant power. In parallel operation of multiple devices, a master-slave bus is used to link the units to an integrated system. Further, optional, pluggable digital interface modules for CANopen, Ethernet (1 or 2 ports), Profibus, ProfiNet I/O (1 or 2 ports), RS232, DeviceNet and ModBus-TCP are available.


“The built-in function generator provides users with exceptional flexibility in creating test profiles. This is especially important in reproducing non-linear internal resistances, such as those needed in testing batteries and LED lighting systems”, said Gerard Sheehan, Intepro’s Chief Technical Officer.

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