Home » Products » The R&S NGU bi-directional and bipolar DC power supplies
The NGU line of DC power supplies from R&S consists of the 2-quadrant bi-directional NGU201 and the 4-quadrant bipolar NGU401 DC power supply of 60W combined with a 6.5 digit DMM. The NGU201 is adjustable from 0V to 20V and can supply currents but also dissipate up to 8A due to its bi-directional design. The bipolar NGU401 adds the additional functionality of working with negative voltages from -20V to 20V. The bi-directional and bipolar models feature extremely fast load regulation of less than 30us with minimal overshoot, even at maximum load changes.
The NGU power supply with 6.5 digit measurement combination has two voltage ranges and six current ranges allowing accuracy up to 1uV/100pA. Remote sense outputs are provided to eliminate the voltage drop over cabling and provide the most accurate voltage possible.
With the data logging function FastLog, voltage and current are recorded every 2hS. Every momentary peak is detected and recorded effortlessly and with the greatest precision.
Sequences can be programmed containing up to 2048 different steps for voltage and current per cycle. The dwell time of each step can be set from 100us to 10 hours. This makes it possible to create very short voltage drops, for example, to test the start-up behaviour of a device. Or long test sequences to perform endurance tests that take weeks.
The R&S NGU series is equipped with a large high resolution touch screen of 800×480 pixels. This makes the measurements and settings of this power supply/measuring combination clear and easy to operate.
The bi-directional R&S NGU201 is specifically designed for testing and simulating battery cells. Multiple battery types (Pb, lithium-ion, NiCd and NiMH) are pre-configured. Depending on the application, you can easily change the parameters to your own liking. There is also the possibility to save own battery models in the NGU201 via USB. Simulation is possible with any battery type and the capacity, state of charge and open circuit voltage can be specifically set to perfectly simulate any situation.
The bipolar R&S NGU401 is operational in all 4 quadrants. This makes this power supply/measurement combination ideal for characterising semiconductors, for example. This can be done in each quadrant without having to adjust polarity in the test setup.
Thanks to the extremely high accuracy and fast recovery time from changing loads, the R&S NGU bi-directional and bipolar power supplies are perfectly suited to the most challenging applications where low power and high resolution are required.
Open the datasheet for detailed specifications of this product.
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"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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