Corner Grounded Delta Transformer Wiring Diagram Of A. The delta system can also be grounded as shown in Figure 2 below. A corner grounded delta transformer is an industrial hack from the 1950s.
We use our trainer model made by Three Phase Innovations to. It could also prohibit a corner grounded 240V delta since using a grounding transformer a 240V system could be grounded with a L-G voltage of only 139V. If the transformer has not yet been purchased you could use either a 480240 center-tapped delta- or 480277 wye-configured grounded secondary.
This demonstration video shares the wiring voltage and history of a corner grounded delta bank.
Ground fault protection in corner grounded delta system 11302016 124 PM If you want to detect a neutral to earth fault which is really what youre saying you need an earth leak trip device because a neutral to earth fault also needs disconnection before you hurt or kill somebody. Because it gives you the advantages of a delta connection without one of the big disadvantages namely the fact that single line-ground faults arent readily detectable creating the potential for unplanned system failures with a subsequent secon. Internet could be heartless to us who looking for free thing. In a delta configuration the three windings are connected end-to-end to form a closed path.