1) That is a delta - wye transformer.
In this image what would be different if it were a Delta to Delta Trafo instead of a Y to Y trafo????
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How do you know that?
Could be the fact that it is labeled as such. . Not the source, the transformer.
Could be the fact that it is labeled as such. . Not the source, the transformer.
I doesn't say "delta". In jargon, "3 wire" usually means delta. Also considering the nature of the sketch and the op question, I could see 3 wire referring to how many conductors are attached to the primary.
:happyno:
I think it is an important concept for those who are learning that 1) you can connect three wires to a wye supply or source 2) "x wire" and delta wye connections refer to different things 3) one could have a wye connection but not have access to the wye point.
The way it may or may not be connected is not the give away, a Wye-Wye transformer would be shown (labeled) as 480Y/277 to 208Y/120. Since the illustration calls out a single voltage (480) it indicates a Delta primary.
Roger
I think it is an important concept for those who are learning that
1) you can connect three wires to a wye supply or source
2) "x wire" and delta wye connections refer to different things
3) one could have a wye connection but not have access to the wye point.
that is still not industry standard transformer designation.
however that is still not industry standard transformer designation.
What is not a standard transformer designation?
If the Op didn't mean to say what he/she did then the whole thread was a waste of time but, I think with the effort put into the drawing it most certainly was what was meant to be asked.Perhaps the op will chime back in and let us know if he drew it and if he meant to say delta in the op.
And post #3 pretty much answered that considering there is a grounded conductor shown.The OP asked what would be different if the transformer was delta/delta.
The OP asked what would be different if the transformer was delta/delta.
In this image what would be different if it were a Delta to Delta Trafo instead of a Y to Y trafo???