Abstract

Summary This chapter contains sections titled: The Equivalent Voltage Source Method Single-Pole Short Circuits to Ground Calculation of Loop Impedance Three-Pole Short Circuits Calculation of Resistance Values for Operational Equipment Network Feeders Synchronous Machines Consideration of Motors Overland Lines, Cables and Lines Transformers Impedance Corrections Short Circuit Currents for Three-Pole Short Circuits Peak Short Circuit Current Symmetrical Breaking Current Steady State Short Circuit Current Thermal and Dynamic Short Circuit Strength Examples for the Calculation of Short Circuit Currents Example 1: Calculation of the Short Circuit Current in a DC System Example 2: Calculation of Short Circuit Currents in a Building Electrical System Example 3: Dimensioning of an Exit Cable Example 4: Calculation of Short Circuit Currents with Zero-Sequence Resistances Example 5: Complex Calculation of Short Circuit Currents Example 6: Calculation With Effective Power and Reactive Power Example 7: Complete Calculation for a System Example 8: Calculation of Short Circuit Currents With Impedance Corrections

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