Primary Fuse Curve vs. Transformer Inrush: 1,000 kVA at 12.47 kV

A schematic minimum-melting curve for a 100 A, 15 kV class primary fuse against the 556 A, 0.1 s inrush point of a 1,000 kVA transformer (12 × the 46.30 A primary full-load current), with the transformer data and notes.