Our test room needs an own galvanic separated TN-net system. The net should also be loadable with high one-phase asymmetric loads. The voltage has to be adjustable with 5 steps.
Solution
A three-phase isolating transformer with vector group Dy5n. The secondary winding has tappings and is switchable via a three-phase on-load tap-changer.
Technical data
Primary: 3 x 400 V Secondary: 3 x 50 - 150 - 250 - 320 - 400 V Current: 43,3 A Vector group: Dy5n Protection class: IP 23
