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The solar PV inverter laboratory at Fraunhofer ISE is said to be the first and currently the only laboratory in Europe where manufacturers can commission certification in accordance with the medium-voltage grid codes that have applied since 1 July 2010, of solar PV inverters with a power rating of up to 1MW.

The laboratory is equipped with three medium voltage transformers, each with a power rating of 1.25MW, which are connected to the 20 kV grid. One transformer supplies power to the solar array simulators, which supply the inverters to be tested with a voltage of up to 1kV and a current of up to 1kA.

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