Yah, I've seen that 2 transformer connection very often. But those transformers are usually connected to a 4 wire wye system with a grounded neutral.
I have never seen 2 transformers wired wye secondary. It is usually red leg delta around here.
Sorry I should have been more clear. I meant to say the
Primary is wye connected.(each transformer is connected phase to neutral). Yes the secondary is open delta with a high leg.
