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Neutral Grounding Resistor IEC
- Thread starter timm33333
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From my experience in IEC world, I can say that either Low Resistance Grounding or Soild Grounding
with a coordinated ground fault protection scheme are widely used in both low & medium oltage systems.
To my knowledge there is no IEC (or even an ANSI/ IEEE standard) specifying the minimum
voltage that a NGR is allowed. The application depends on soil resistivity and other grounding practices.
In ANSI world, 25kV is the preferred volatge limit because beyond 25kV capacitance is becoming a problem during a ground fault.
with a coordinated ground fault protection scheme are widely used in both low & medium oltage systems.
To my knowledge there is no IEC (or even an ANSI/ IEEE standard) specifying the minimum
voltage that a NGR is allowed. The application depends on soil resistivity and other grounding practices.
In ANSI world, 25kV is the preferred volatge limit because beyond 25kV capacitance is becoming a problem during a ground fault.
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