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How to design a neutral grounding resistor for 5 MW generator and what are the points to be considered before design a NGR for generator? Kindly give some design methods or articles regarding this.
Thank you.
T.Kailash Kumar,
tkailashkumar@gmail.com
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http://cr4.globalspec.com/thread/26372/Calculating-NGR
There are two scenarios for determining of suitable resistance.
1- Concerning of power swing and stability in low impedance grounding systems.
2- Concerning of over voltage effects and insulation problem in high impedance grounding systems.