Inrush Current of Superconducting Transformer

Inrush current in superconducting transformers is a little-known phenomenon. Because of its high values and long time, it may lead to loss of superconductivity in transformer´s windings. In the article, we present results of inrush current measurements in two superconducting transformers of the same power but different winding geometries. The results were confronted with inrush current registered for a transformer with copper windings. The results suggest different parameters of inrush current for superconducting transformers as compared to transformers with copper windings. This article is an introduction to a series of studies on the phenomenon of superconducting transformer inrush current.