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Low-impedance earthing is applied in medium-voltage and high-voltage systems worldwide with nominal voltages above 10 kV. Power systems having nominal voltages U n? 132 kV are generally operated with ...
Power systems with resonance earthing are widely in operation in Central European countries. The German power system statistic [3] indicates that 87 per cent of the MV-systems having nominal voltages ...
Without the earth wire, if a fault occurs and the live wire becomes loose, there is a danger that it will touch the metal case. The next person who uses the appliance could get electrocuted. The ...