BONFIGLIOLI Vectron ACTIVE CUBE Série Guide Rapide page 85

Mains connection 6 phases:
GB
6ph/400V AC or 6ph/525V AC or 6ph/690V AC
6-phase connection must be done via the same mains feeders and a suitable
transformer (e.g. one d and one y winding on secondary side) which shifts all phases
by 30° to one another. Alternatively, two transformers can be used (one with D-
winding, one with Y-winding on secondary side).
10/18 Quick Start Guide ACU 83