Definitions: Methods Of Calculations – Time Behavior Of The Short-Circuit Current – Short-Circuit Path In The Positive-Sequence System – Classification Of Short-Circuit Types – Methods Of Short-Circuit Calculation – Superposition Method – Equivalent Voltage Source – Transient Calculation – Calculating With Reference Variables – The Per-Unit Analysis – The %/Mva Method – Examples – Characteristics Of The Short-Circuit Current – Calculation Of Switching Processes – Calculation With Pu System – Calculation With Pu Magnitudes – Calculation With Pu System For An Industrial System – Calculation With Mva System – Fault Current Analysis – The Significance Of Iec – – Supply Networks – Calculation Variables For Supply Networks – Lines Supplied From A Single Source – Radial Networks – Ring Networks – Meshed Networks – Vi Contents – Network Types For The Calculation Of Short-Circuit – Currents – Low-Voltage Network Types – Medium-Voltage Network Types – High-Voltage Network Types – Systems Up To Kv – Tn Systems – Description Of The System Is Carried Out By Two Letters – Calculation Of Fault Currents – System Power Supplied From Generators: – Tt Systems – Description Of The System – It Systems – Description Of The System .