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Thread: Marine Question - Xfmr and Ground

  1. #1
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    Marine Question - Xfmr and Ground

    Working on a marine project if anyone here has some marine experience.

    Question 1: (See attached Pic).... the Upstream xfmr is shown Delta/Wye and the downstream transformer is delta/delta. does that work or should the downstream xfmr be Wye/Delta?

    Question 2: (See attached Pic)...How come they use the "HRG" High resistance ground on the Switchboards instead of just typical earth/ground rod?

    Thanks

    TempUntitled.pdf

  2. #2
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    To limit the magnitude of ground faults, quite common on MV systems.
    The reports of my death are greatly exaggerated.

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