Answer / subbiah

i think not possible............because u should have a experience in Transformer commissioning for one year.and knowledge of wiring installations.

what is the significance of cabability curve of alternator

0 Answers  

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why the three phase transformer's star point does not sparks or seperated? while we often see that two phases touches each other it sparks and ocationaly conductor breakes out.

4 Answers  

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difference between torque mode and speed mode

4 Answers   JSW,

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How to calculate ant test the burden of Current transformer

0 Answers   NTPC,

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Relative synchronous generator

1 Answers  

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i have 90kw motor.so i choose connect cable .please what is parameter checked so please give to formula

0 Answers   May Baker,

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what is the difference between thermal magnetic release and microprocessor based release breakers. what are the advantages of latter over the first one...

5 Answers   Jackson, Karthik Industries, McD BERL, TCS,

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i have a 4 Mva transformer 34.5 kv / 480-277 v and i used 2 parallel 3200 amp bus duct for the secondary feeder using 3 ply of bus bar ( 3/8" x 5" ) as a common where the flexible link terminated and 6300 amps breaker for the main, the lower bus duct reaches 70 degrees and the upper bus duct reaches 55 degrees when i used thermal scanner. why the temperature is not balance when the load reaches 3600 amps.

0 Answers   SCM,

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how to calculate the torque of a motor?

0 Answers  

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why generator and t/f ratings given in kva & motor rating is in KW?

6 Answers  

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How core saturation effects the secondary voltage (whats the theory) of a current transformer in service?

1 Answers  

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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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