Vacuum circuit breakers in cable networks
2013
The impact of switching over-voltages in a public distribution network on cable ageing and the occurrence of earth fault failure are discussed. It is concluded that 95% of the network remains unaffected by the behaviour of the VCB, and that switching over-voltages in the remaining connected Industrial sites don't propagate into the public network. Hence, VCB behaviour cannot explain the increased earth fault failure rate observed in Russia. (4 pages)
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