How to measure the total Earth Fault Loop Impedance Z(s)?

Описание к видео How to measure the total Earth Fault Loop Impedance Z(s)?

The earth fault loop impedance path need to be of low impedance so the fault current is high. This high fault current will cause the overcurrent protective device (breaker) to operate efficiently.

How to calculate or measure total earth fault loop impedance for an installation connected to a TN-S and TT-TNS earthing arrangements.
#impedance

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