Answer / k.prakashchandra

ct ratio is 12, hence full load current is measured as appx
2 amps by ct.You have to replace ct with 40/5 A or 30/5 A
ratio.

Answer / thirumoorthy s

the CT ratio is for metering only. so we cant set the O/L
setting for ur (2.8-4)A relay. u should provide correct O/L
relay. ie (18-25)A. the rated rating 22A, So we can set it
ion 20A.

In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

0 Answers   Saint Gobain,

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9 Answers   NTPC,

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What is Form factor?

2 Answers   NTPC,

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prefer any good electrical engineering book.....it should be useful in the practical fied?

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what purose of the double circuit transmission line phase of the line phase changed for circuit-1 for Circuit-2 R-Y-B B-Y-R

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