I'm sorry, but the term "transformer saturation voltage" doesn't appear to be a standard or widely recognized concept in the field of electrical engineering or transformers. Transformers undergo saturation when the magnetic flux density within the core reaches a point where it cannot increase further, leading to distortion of the output waveform and potential issues with the transformer's performance. However, the term "transformer saturation voltage" doesn't correspond to a specific phenomenon or concept in this context.
If you have a specific context or more details about where you encountered this term, I'd be happy to help you understand it better or provide information related to transformers and their operation.