POWER SUPPLY
SURGE PROTECTION
Photography: @Mersen
WITH THE ABAT AND GBAT FUSE SERIES, MERSEN INTRODUCES INNOVATIVE OVERCURRENT PROTECTION PRODUCTS FOR BATTERY ENERGY STORAGE SYSTEMS… Protection for renewable energy
O n the road to fighting global warming, Battery Storage or Energy Storage Systems (ESS) are in demand, as they store intermittent energy produced by renewables such as solar or wind power generators and then distribute it back into the grid. The global energy storage market will enter a prolonged period of growth, with annual installations reaching more than 30 GW by 2030 – up 250% from 2021 levels – according to the latest report from the Clean Energy Technology service at IHS Markit. This places extreme demands on protection systems. “As a result of climate change, we will need more and more storage systems for the renewable energy being generated. In addition, a standard is needed for the protection of these new electrical systems”, explained Mersen expert Dr Philippe Roussel. Protection for storage systems To protect these electrical energy storage systems, Mersen Electrical Power introduces the ABAT and GBAT fuse product series. They supplement Mersen’s DC overcurrent protection portfolio and all
products conform to the new IEC 60269-7 standard supplementary requirement for fuse links, ensuring the protection of batteries and battery systems. The ABAT15A is mainly dedicated to integrated suppliers that provide the battery rack, an assembly of battery modules in series into one rack or string of batteries controlled by a Battery Management System (BMS). The fuse is installed to protect the battery and contactors from short circuits located inside the BMS. The fuse current rating varies from 100 to 500A. The ABAT15C and ABAT15D were designed for system integrators and Power Conditioning Systems (PCS) manufacturers. By selecting the number of battery racks in parallel into one system, the integrators can define the power input and output. The racks can be installed in sections, which can then be installed in a container. Multiple racks can also be installed directly into a container. The PCS manufacturer provides the inverter necessary to connect the complete battery system to the grid by converting the power from DC to AC. Depending on the system integrators, they are able to provide both the complete
set of battery systems and the PCS. As multiple battery systems are installed, the power output is higher than a rack, resulting in a fuse rating from 500 to 1600A. All ABAT fuses have been tested with short circuit currents up to 250 kA. For small and large overcurrents The fuses in the GBAT series are designed for use in battery containers and inverters. They provide both short circuit and overload protection, covering overcurrents of lesser magnitude and DC fault currents up to 150 kA, at time constants (L/R) of 1 to 3 milliseconds. GBAT fuses come in two nominal voltages: fuses for system voltages up to 1000 V DC in sizes NH1 and NH2 (up to 50 kA), and 1500 V DC fuses in sizes up to NH3XL (up to 150 kA). All are available with either screw-on blades for direct mounting or with plain blades.
T: +44 (0) 1273 425119 E: sales.ep.uk@mersen.com www.mersen.co.uk
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