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  • Users: pdias
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  1. pdias

    Short Circuit Calculation - Impedance Method - Three Winding Power Transformer

    Hello All! I need help to calculate the impedance of the Power Transformer in order to determine the Isc3k (Three-phase fault) by the impedance method. I have the bellow circuit: The Power Transformer have 3 windings: Primary (1N), Secondary (2N) and a Tertiary (3N). An Auxiliary...
  2. pdias

    Sizing of Conductores - IEC

    Hi! I'm selecting the conductors according the IEC 60364-5-52 in a Substation. We're using concrete cable trays like the following: They are sheathed multi-core cables. Regarding with the reference number and the method of installation to be used for the calculations i thing of use the...

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