How to check Loop Impedance | Earth Fault Current | PSC Test | Prospective Earth Fault

How to check Loop Impedance | Earth Fault Current | PSC Test | Prospective Earth Fault

Earth fault loop impedance (Zs) is the impedance in ohms of the circuit path formed during a fault between earthed metal work and live parts. It includes the external impedance circuit (Ze) and the resistance of the phase and circuit protective conductors (R1 + R2).

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