A simple application to calculate an initial symmetrical 3-phase short-circuit current. The application allows you to configure any single line of electrical circuit. The source can be a transformer or a point of the power system. The circuit may consist of any number of transformers and lines. The end of the circuit should be completed by a load or a motor. Motor participates in the short-circuit current at the point of fault. The application allows you to save files of created diagrams. The a