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H&H, manufacturer of an impressive line of electronic loads, has developed the new SCL series especially for testing high-current DUTs such as fuel cells. This electronic Single Cell load can load a connected voltage source up to 1,200 A at a minimum input voltage of only 600 mV (standard models) or even from 0 V (SCL ZV).
This series is available in a 12V and a 40V model suitable for currents of 400A, 800A and 1,200A. For higher currents, multiple loads can be connected in parallel in a master – slave configuration. The different models are housed in a compact 19″ housing of only 2 U high.
The SCL series loads operate in the following modes; constant current (CC), constant voltage (CV), constant resistance (CR) and constant power (CP) and the following combined modes; CC+CV, CR+CC+CV, CP+CC+CV, CV+CC. In the modes CC, CV, CR, CP, the electronic loads can produce load profiles using the List function. Up to 300 settings with variable setpoints and ramp-up / ramp-down times are possible.
Furthermore the SCL series loads are standard equipped with a number of functions specifically belonging to high current DUTs. One of these is the determination of the internal DC resistance of the connected DUT. The determination of the internal resistance Ri is based on the principle specified in various standards for batteries and accumulators, for example DIN EN 61951, DIN EN 61960. In addition, the modulator function is suitable for defining a waveform on the load current in the frequency range from 0.1 Hz … 10 kHz as the basis for an impedance analysis.
The discharge function tests DUTs such as batteries, ultracaps and electrolytic capacitors etc. by discharging them in CC, CP or CR mode. The discharge function can be combined with the list function to enable pulsed discharge. IUa discharge (CC+CV discharge) is also possible: the test object is discharged with a constant current to a defined voltage. This voltage is then kept constant until a defined minimum current is reached. Stop criteria are charge, energy, time, current, voltage. During data logging, a follow-up time can be defined to observe the regeneration phase.
The electronic load is able to synchronously log data of voltage and current with a time stamp and store them internally. Up to 40,000 records are stored in a ring buffer and can be read out afterwards. After recording has been completed, the data can also be transferred to a USB flash drive. For processes with a measuring interval in the seconds range, storage can also take place directly on the USB flash drive.
For remote control, almost all common interfaces are available as standard. RS-232, USB, LAN, CAN, Analogue. GPIB is optional.
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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