I found a fish tail coat collar Phase B, all the Primary and Secondary heating Phase is over, should be verified by Thermoscan camera again while the transformer Load is settled.
Meet the winch cover both the Primary and Secondary Phase B is hotter than the other Phase Thermoscan should check the camera again as the transformers are paying Load.
Found a state Phase B tail sheath in the Primary Secondary and heat than other Phase should be monitored by a camera Thermoscan. Again, while transformers are paying Load.