freuency meter

1 Answers  

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what is the diff between earth leakage relay and earth fault relay?

7 Answers  

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Can you explain about TEE protection scheme?

0 Answers   Voltech,

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What is corona loss?

2 Answers   PWD,

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As per the theory current doesn’t flows in Neutral, but practically it is not applicable, explain why?

2 Answers  

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What are effect of radio system in DCS Distributed control system ?

1 Answers   Sabic,

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How to convert farad to kvar. both are the unit of capacitor.

5 Answers   College School Exams Tests, UltraTech, Vikram Ispat Industries,

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Sir we have 12.5 MVA(110/11KV) transformer (Y-Y) connected,which tripped showing earth fault,when we charged transformer it stood OK ,but on connecting 11 KV feeders it tripped showing earth fault.our service engineers found that the B phase and R phase phase connecting to neutral broken from HV OLTC(on load tap changer),and R phase and Neutral is ok.Dissolved gas analysis shows that accetline content is high,tan delta value is 12.My dout is it is an internal fault of transformer,why REF or diffrential relay is not acted?

1 Answers  

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What is a DC series motor?

0 Answers   Ericsson,

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what is the minning of propotional, integral, derivative ?

1 Answers  

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in DG synchronization system can i short R,Y,B- phase(DG-1) to R,Y,B Phase (DG-2), HOW IT WORK . WHAY WE NEED TO SYNCHRONIZATION.

1 Answers  

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what are the major difference between 3phase 3wire and 3phase 4wire trivector meter?

2 Answers   L&T, NTPC,

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