My system is 22kv/3.3kv transformer. client is asking to use NGR, but as we have dedicated Neutral Earthing systems which has a value less than 1 Ohm. So i want solid comparision. Why i should not use NGR as my system is already protected.Can any one help me to get out of this.how should i reply on basis of some great comparision and calculations. Please help

2 Answers   Ariel,

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Hi, My question is our total motor load is 55 kw.so what cable size required for main supply. Please reply

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4 Answers   Bhel, Foretec Engineers,

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What is core CT & it's function?

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