Impedance
Türkçe: Empedans
The total opposition to alternating current; a combination of resistance and reactance, measured in ohms.
// EXPLANATION
Impedance is written as the complex number Z = R + jX. Line, cable and transformer impedance determine short-circuit current and voltage drop.
// ALSO KNOWN AS
impedance
// RELATED TERMS
Electrical resistanceThe opposition a material offers to current flow; by Ohm's law R = V / I, measured in ohms.
Earth-fault loop impedanceThe total impedance of the path a fault current follows (source, line conductor, protective conductor); it decides whether the protective device will trip in time.
Voltage dropThe reduction of voltage at the load compared with the source as current flows through the resistance and reactance of a cable.
