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  1. badasselectric

    autotransformer with impedence ground

    I have a 750kva autotransformer 480v/1000v, it has a 15a 600v resistor connected to the xo/ho terminal. The autotransformer feeds 2 400a/1000v breakers equipped with shunt trips and ground monitoring. I have experienced 3 faults with damage to a phase conductor in the trailing cable and the...

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