Dissipate at 0 Volt current. That is not possible, I hear you say. That’s right, but H&H has managed to reduce the operating range of a number of models from the PLI series, electronic loads, to an almost short circuit (10 mV).

The so-called ZERO Volt models of the PLI series are available from 1.000W (60A) to 17.000W (720A) and suitable for voltages up to 60Vdc. With a lower limit of 10 mV. This makes these electronic loads extremely suitable for testing, for example, Fuel Cells where cell voltages of < 1V are present. The relatively high currents at such low working voltages make quite some demands on the electrical connections and cabling. It is therefore very important to compensate for the voltage drop that occurs over the cabling. The ZERO Volt models from the H&H PLI series are suitable to compensate for a voltage drop up to 0.5V.

An electronic DC load is mainly used for testing DC power supplies, fuel cells, batteries, etc. For the latter application, the PLI unit has a specific function to determine the internal resistance of the battery or accumulator.


Arnold Memelink

Arnold Memelink


"The ABB Power Grids Jumet organisation is an innovative development and production facility of ABB that manufactures active filters and battery energy storage systems to support a stable grid. To test these systems we have acquired two Cinergia GE/EL +120kVA eplus units capable of doing grid emulation (AC + DC), operating as an electronic load (AC +DC) and being a battery emulator. We have experienced very good support from TTMS in obtaining these two Cinergia units. This included organising an on-site demonstration and supplying loan systems prior to the delivery of our final systems. This way we could start testing as early as possible. TTMS also organised training for the operators from the original manufacturer. This support allowed us to introduce the first battery energy storage systems even prior to the full delivery of the Cinergia systems."

University of Luxembourg

Sasan Rafii-Tabrizi

University of Luxembourg

“At the Energy and Environment department of the Faculty of Science, Technology and Medicine (FSTM) of the University of Luxembourg we do have different research projects related to green energy contributing to the development of eco-cities. As a long-standing partner of our research unit, TT&MS has proven that they are able to answer even the most complex questions in a professional manner. They have shown that they are always up to date with the latest technology and do not spare any effort to look at the application and even the situation on site. The exchange of ideas was always very pleasant and took place quickly. We look forward to further years of fruitful cooperation.”


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