Calculation of the effects of short-circuit currents

This document establishes the fundamental methodology for calculating the thermal and dynamic effects produced by short-circuit currents in electrical installations. It provides engineers and designers with the necessary formulas and coefficients to determine the mechanical stresses and temperature rises experienced by conductors, supports, and busbar systems during fault conditions. The scope covers various types of short circuits and includes considerations for the specific characteristics of different materials used in power systems. By applying the prescribed calculation techniques, professionals can ensure that equipment is selected and installed to withstand the forces generated without suffering mechanical failure or excessive thermal damage. The approach integrates both direct current components and alternating current components to offer a comprehensive assessment of system behavior under abnormal operating conditions. This standardized procedure facilitates consistent design practices across different regions and projects, promoting safety and reliability in high-voltage and low-voltage power networks. The text outlines the theoretical basis and practical steps required to evaluate the impact of fault currents on electrical infrastructure components.