X-fmr dot convention and phase shift

[Redskinsdb21]

OK, I know if there is delta-delta, there is no phase shift from V_ll from primary side to secondary side, generally. But where does dot convention come in? for example if primary side of a delta-delta has dot at top on primary side and dot at bottom of secondary side, does this knock the fact that " there is no phase shift from V_ll from primary side to V_ll secondary side" out of fact now? This is confusing, can anyone clear it up?

 

[Wael]

My understanding to phase shift is that it results when you go from different configuration of transformer Y to delta or vice versa. phase shift has nothing to do with dot convention. Dots will play role in Mutual inductance and the flux between the windings.