feilkurrents
Feilkurrents, or fault currents, are abnormal currents that flow in an electrical power system when insulation fails or a fault path is created. They occur during short-circuits, earth faults, or line-to-ground faults, and can have magnitudes many times the normal operating current. The magnitude depends on system impedance, source voltage, and the location of the fault. In AC systems, fault currents rise quickly and have a high initial peak followed by a decaying transient; DC systems show different transient behavior.
Fault currents pose risks to equipment, insulation, and personnel, causing overheating, damage, arcing, and triggering protective
Protection schemes use overcurrent protection, such as fuses and circuit breakers, and specialized devices for ground
Calculations of prospective fault current are part of system design, using source impedance, transformer impedances, and
Mitigation includes proper insulation, clearances, proper conductor sizing, grounding practices, and regular maintenance. In industrial and