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Transformer Riddle No.90 – Ground resistance to restrict 750 mA

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  • 2021-08-03 at 11:08 am #1064
    Tarun Panwar

      please guide, how to calculate Neutral Ground Resistance for transformer (630kVA, 11/0.433kV) for neutral earthing to limit the earth leakage current to 750 mA as per recommendation in hazardous area locations.
      Dear Sir,
      please guide, how to calculate Neutral Ground Resistance for transformer (630kVA, 11/0.433kV) for neutral earthing to limit the earth leakage current to 750 mA as per recommendation in hazardous area locations.
      with regards

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    • 2021-08-03 at 11:08 am #3274
      unknown

        Dear Tarun, Resistance = Phase Voltagex1000/750

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