It's clear, it is about 3 phase, 12 pole winding in 48 slots. More details: The technician wasn't able to record a genuine connection and he tried with this one. Is it correct ? What could be an outcome if this connection is applied?... Since each 12 pole winding in 48 slots is unbalanced by its nature, the analysis did show a small asymmetry in the MMF (amplitude and angle , see the picture below), as expected. Also, the basic winding factor has a good value. Does this mean that the proposed diagram is good? An answer with explanation is here.