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In CDG type IDMTL realy O/L , E/F, O/C which are used for
out going feedrs,on R-phase o/c element, Y-phase , e/f
elecment and on b -phase o/c element will be connected .
Why the earth fault on center phase only, why not on other
two phases?
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Answer Posted / sathiyaseelan.m
I thing you may misunderstand that.
As per your Qtn.: It has 2 O/c 1E/F
That means Over current b/n R&Y & Y&B so 2 O/c and this two
are eough to protect the Entier system from O/C.
And the earth fault sences from all phases unbalanced load
only. That means Internaly all are taken for refarence
| Is This Answer Correct ? | 12 Yes | 2 No |
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