As of my last knowledge update in September 2021, the term "transformer short-circuit withstand capability" doesn't refer to a widely recognized or established concept in the field of transformers or electrical engineering. Transformers are devices used to transfer electrical energy between two or more circuits through electromagnetic induction. They play a crucial role in electrical distribution systems by stepping up or stepping down voltage levels.
However, it's possible that new concepts or terminologies have emerged after my last update. If "transformer short-circuit withstand capability" has become a relevant term in the years following 2021, I recommend consulting the latest literature, standards, or resources in the field of electrical engineering for accurate and up-to-date information.