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Itech IT8000 Series Regenerative DC loads
The R&S NGU bi-directional and bipolar DC power supplies
Itech IT6000C series bidirectional power supplies
Chroma 62000D Programmable DC Power Supply and Load
Itech IT-M3600 Regenerative Power System
Chroma 6330A modular DC loads series
Cinergia EL series ePlus regenerative AC loads
Cinergia EL series ACDC loads
H&H PLI-MR, Multi-Range DC loads
H&H, ACL SERIES ELECTRONIC AC LOADS
Itech IT-M3300 Regenerative DC Loads
Itech IT6000B Bi-directional DC Power Supply
Itech IT8700 series DC Loads
Itech IT8800 series DC loads
LDH400P electronic load up to 500V from TTI
M192 Programmable AC/DC Resistance Load
For electronic loads (in short: loads) we differentiate between AC and DC loads, like we do for power supplies. Loads are used to test energy-generating installations.
Examples of AC loads are solar inverters and UPS systems. Most AC loads have adjustable power and can operate in both Constant Current and Constant Resistance mode.
Examples of DC loads are switched power supplies, DC / DC converters, batteries, fuel cells, battery charging cables, and solar panels. The options regarding loads are Constant Current, Constant Resistance, Constant Voltage, and Constant Power. Some models are supplemented with Constant Impedance and a combination of the aforementioned possibilities.
The easiest way to test a power supply is to load the power supply with a resistive load. This way, it is easy to determine whether a power supply meets the basic specifications of voltage, current, and power. However, most resistance loads are not pure, and the power supply’s load is often dynamic instead of static. Electronic loads are often used in order to test the power supply on dynamic behavior.
How quickly does the power supply follow when a load changes from 10% to 90%? Does the power drop in case of such load, and by how much? How quickly does the power supply recover to the set voltage? What is the current’s characteristic course? These questions may be answered by applying correct electronic loads.
A multi-channel DC load is often used for the testing of, for example, PC power supplies that have both 12V, 5V and 3.3V outputs. Multichannel AC loads are generally used for testing three-phase systems.
At TTMS, we carry electronic loads to a capacity of 600KVA. Especially with these high powers, it is interesting to use regenerative loads.
Alternatively, we also carry water-cooled DC loads.
Last but not least, we carry specific loads developed for, for example, the testing of solar panels (zero volts optional) and fuel cells (low voltage and high currents).
Would you appreciate advice on your application’s electronic loads? Please do not hesitate to contact us.
"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
“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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