We have 400V 3-phase going to the racks; from the PDU's in each rack the phases are split in the usual fashion and so the equipment eats 230V 1-phase as usual i

We have 400V 3-phase going to the racks; from the PDU's in each rack the phases are split in the usual fashion and so the equipment eats 230V 1-phase as usual in this part of the world. This seems fairly common these days, all the vendors offer such PDU's off the shelf, nothing special.