Abstract: A frequency converter kit includes: basic units having a first plug-in connector by means of which the basic units are connectable to an AC voltage grid; a power electronics system; and a heat sink for cooling the power electronics system, wherein the heat sink has coupling elements; and extension units that are pluggable onto the basic units and have a port by means of which the extension units are connectable to the AC voltage grid; a first plug-in connector for forming a plug-in connection with the first plug-in connector of the basic units; and a housing element, the housing element having coupling elements. The coupling elements of the basic units and the coupling elements of the extension units are formed such that they interlock when the extension units are plugged onto the basic units.

Abstract: A charging station charges an electric vehicle. The charging station has: a housing, a number of first power electronics components and a number of second power electronics components, the second electronics components being different from the first power electronics components, wherein the first power electronics components and the second power electronics components are arranged spatially in the housing, and a first air cooling circuit and a second air cooling circuit separate from the first air cooling circuit. The air cooling circuits are arranged spatially in the housing. The first air cooling circuit serves to cool the number of first power electronics components. The second air cooling circuit serves to cool the number of second power electronics components. The charging station is designed such that a first protection class of at least one region of the first air cooling circuit is higher than a second protection class of the second air cooling circuit.

Abstract: The invention relates to a method for the cambering of a wooden element, comprising the steps of: cutting to form at least one incision in a surface of the wooden element; inserting an expansive material into the at least one incision of the wooden element; letting the expansive material expand in the at least one incision so that a cambering of the wooden element is achieved.

Abstract: A charging station charges an electric vehicle. The charging station has: a housing, a number of first power electronics components and a number of second power electronics components different from the first power electronics components, wherein the power electronics components are arranged spatially in the housing, and a first air cooling circuit and a second air cooling circuit separate from the first air cooling circuit. The air cooling circuits are arranged spatially in the housing. The first air cooling circuit serves to cool the number of first power electronics components. The second air cooling circuit serves to cool the number of second power electronics components. The charging station is designed such that a first protection class of at least one region of the first air cooling circuit is higher than a second protection class of the second air cooling circuit.

Abstract: The invention relates to a method for the cambering of a wooden element, comprising the steps of: cutting to form at least one incision in a surface of the wooden element; inserting an expansive material into the at least one incision of the wooden element; letting the expansive material expand in the at least one incision so that a cambering of the wooden element is achieved.