Thank you very much, sir, for your expertise and explanation. Most of them go over my head (ha ha). The crossing between the two LV windings (secondary and tertiary) kind of gives me some idea that there are two kinds of construct it hence two results. You mentioned imbalance magnetic flux on...
Can someone explain core and coil construction of a three-winding transformer and its magnetic flux coupling among the three windings. How can some of the equivalent T-models have a very high % value of ZT (e.g. 58%) while others have a very normal value (of single digit %, e.g. 5% to 7%).