This is my first post and I am happy I stumbled across this forum. I am preparing for a job interview and have been given a Delta-wye transformer schematic and have been asked to discuss the phase shift between the primary and secondary windings. I know that there is a phase shift of 30 degrees, but in this particular drawing there is a neutral line on the delta side with no clear connection point marked. I haven't dealt with transformers in a while and am wondering specifically where the neutral is connected to in this schematic? I am assuming I will be asked more about this transformer configuration and would like to completely understand what is going on here with that neutral. Any help is greatly appreciated!