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  • Users: smacd
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  1. smacd

    Autotransformer neutral impedance earthing

    In order to limit 110kV single phase fault levels it has been suggested to employ impedance in the neutral of 250MVA 220kV/110kV autotransformers (wye-connected with a delta tertiary). To 'spec' the neutral impedance do i have to give a fault current level (say full-load of the auto) and a fault...

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