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.