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yk
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Join Date: Jun 2011
Location: india/gujrat/Bhuj/atps
Posts: 30

Why GT Star Point Not Earthed via NGT/NGR?

05/17/2012 4:51 PM

HEllo all, sirs, i want 2 know that why star point of GT(STEP UP X'MER) is not earthed via NGT/NGR and direct earthed to ground,when UAT(unit Aux. X'mer) and generator star point are always earthed via NGT/NGR in generating power station? with regard,thanks in advance yk.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

Join Date: Jan 2007
Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: Why GT Star Point Not Earthed via NGT/NGR?

05/18/2012 4:17 AM

Well, the design documentation will show why. At this distance and without having access to it, one possibility is that the prospective fault current is insufficiently high to warrant their inclusion.

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