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Transformer Riddle No.90 - Ground resistance to restrict 750 mA
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
Author : Tarun Panwar - From: India
Sat, December 15th, 2012 - 00:25
Dear Tarun,

Resistance = Phase Voltagex1000/750 
Author : unknown
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