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In neutral-isolated medium-voltage (MV) networks, the earth fault arc is typically extinguished by an automatic reclosing function. It causes a short interruption for the feeder in question. The earth fault arc can also be extinguished by using a shunt circuit breaker (SCB) to earth the faulty phase temporarily at the feeding, typically the 110/20 kV substation. The functioning of the SCB does not...
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