Protection plan for medium voltage public distribution networks: implementation : Earth-fault protection for neutral-compensated radial networks

Earth-fault protection for neutral-compensated radial networks
Protection plan for medium voltage public distribution networks: implementation

Author : Michel ODDI

Publication date: December 10, 2023 | Lire en français

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5. Earth-fault protection for neutral-compensated radial networks

5.1 Mechanisms for the appearance and disappearance of an earth fault

The principle of neutral-compensated networks is described in [D 4 811], § 4.2.3. It shows that ground faults are generally not maintained, for lack of a sufficient arc current: they are usually self-extinguishing, i.e. the fault extinguishes by itself when the fault current passes through zero: we're dealing with transient phenomena, and...

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Earth-fault protection for neutral-compensated radial networks