Ensuring the Requirments of EN61000-4-5 at Industrial mains

Industrial mains can have 600V and even more (1). That require the usage of 2x 320 RMS varistor for input voltage surge protection , to fulfill the requirments of EN61000-4-5. Such Varistors have a Clamping Voltage of typically 2x 840V = 1680V, making the industry standard 1600V input bridges working at or even over limit. this design gap can be managed by using the next generation three Phase bridge by Diotec.
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