As of my last knowledge update in September 2021, the term "transformer zero-phase sequence voltage" doesn't seem to be a recognized or established concept in the field of electrical engineering or transformers. However, I can explain the relevant concepts that might be related to your query.
Transformer: A transformer is an electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. It typically consists of two coils, known as the primary winding and the secondary winding, which are often wound around a common core.
Zero-Sequence Voltage: In power systems analysis, the concept of zero-sequence voltage refers to a set of three-phase voltages that are equal in magnitude and have a 120-degree phase displacement from each other. Zero-sequence voltages can be a result of unbalanced or asymmetrical faults in power systems, such as ground faults or single-phase faults. These voltages are relevant in analyzing the behavior of power systems during fault conditions.
However, the specific term "transformer zero-phase sequence voltage" doesn't seem to have a direct interpretation within these concepts. It's possible that the term might have been introduced or gained significance after my last update in September 2021, or it could be a term used in a specific context that isn't widely covered in my training data.
If this term has gained relevance after my last update, I recommend consulting more recent and specialized sources in the field of electrical engineering or power systems to get accurate information on its meaning and significance.