3 phase delta star (WYE)

[Mjolinor]

If I feed a balanced signal into two of the star side outputs of a 3 phase
star delta transformer how will this come out at the 3 delta side outputs
WRT earth (ground). Assume 1:1, 100% efficiency and no phase shift (or 180
if you prefer but no complex phase shifts). How would it come out of the
remainig star winding?

Trying to get my head round it and confused myself.

A 3 phase transformer http://www.dknpowerline.com/Pictures/3phase.gif

 

[William Robert]

Why would you want to?

 

[Mjolinor]

Why would you want to?

Because I need to prove that the signal is not going through the
transformer. If it were going through the transformer then I will be able to
work that out from the state of the signals present on the delta side, if it
is getting to the delta side by some other means ie insufficient grounding
or faulty earths then the signal on the delta side will not be phased
correctly and the amplitudes will be wrong. I know these transformers will
not pass HF signals but I need to prove that this particular one isn't and
it is in circuit, lotsa volts.