A special step core with 45° cuts and thin gills is used for this construction. The lamella core is made of the material M6T35. All mounting components are non magnetic high grade steel. Like this we are able to keep the losses very low. By a perfect optimisation of the core geometry we don’t need many different materials, thus it is possible to get a very good coupling and a low Uk. The coils have the maximum of copper filling by using tape material. Air channels allow a natural cooling by free convection. The total efficiency is at 99%.
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