On the page http://www.allaboutcircuits.com/vol_2/chpt_10/6.html
The image:
http://sub.allaboutcircuits.com/images/02210.png
Here I think that the connections of T1 and T2 which previously went to T3 should be connected to nothing rather than together. As the schematic is drawn, it shows the circuit with shorted T3 coils, not with open T3 coils as the text says.
I think every schematic on that page is in error, in that the bottom set of A-B-C lines is backwards, and should be C-B-A to be correct. (or the connections from the transformers should be reversed) Of course, everything I know about three phase transformers I learned from that page, so I probably shouldn't be questioning it, but at least the Y-Y and ∆-∆ connections I think should be A to A, B to B and C to C. The others I can't claim to really understand, but I would think that the A phase in the Y configuration should match with the B and C phases with the ∆ configuration, but in the images on that page it goes to A-B in one and A-C in the other. Like I said, I don't really know, but it doesn't seem right.
Anyway, I have to say this site is awesome. I was actually going to make my own electronics site once, but then I found this one and realized it was way better than what I was planning to do. I was going to make my own site because once I had some things straight in my head, I thought it'd be nice to explain them better than the books and websites I had to learn them from, but then I saw that this site explains them exactly they way I had planned to. So instead I just tell everyone to come here.
The image:
http://sub.allaboutcircuits.com/images/02210.png
Here I think that the connections of T1 and T2 which previously went to T3 should be connected to nothing rather than together. As the schematic is drawn, it shows the circuit with shorted T3 coils, not with open T3 coils as the text says.
I think every schematic on that page is in error, in that the bottom set of A-B-C lines is backwards, and should be C-B-A to be correct. (or the connections from the transformers should be reversed) Of course, everything I know about three phase transformers I learned from that page, so I probably shouldn't be questioning it, but at least the Y-Y and ∆-∆ connections I think should be A to A, B to B and C to C. The others I can't claim to really understand, but I would think that the A phase in the Y configuration should match with the B and C phases with the ∆ configuration, but in the images on that page it goes to A-B in one and A-C in the other. Like I said, I don't really know, but it doesn't seem right.
Anyway, I have to say this site is awesome. I was actually going to make my own electronics site once, but then I found this one and realized it was way better than what I was planning to do. I was going to make my own site because once I had some things straight in my head, I thought it'd be nice to explain them better than the books and websites I had to learn them from, but then I saw that this site explains them exactly they way I had planned to. So instead I just tell everyone to come here.