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  1. che12345

    VFD on 230V 50Hz single-phase power source to drive 400V 50Hz three-phase IM load

    Dear Sir, Utility power source: 230V 50Hz single-phase. Load is a centrifugal water pump IM rated 400V 50Hz 11kW 22A three-phase. Wish to regulate the pump speed by using a VFD. The problems are: a) a VFD rated for 230V single-phase input is unable to produce 400V three-phase output, b) unable...

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