What type of core material is used for metering C.T and protection C.T???

0 Answers   Bhel,

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PLC Based Process Automoation Panels?

2 Answers  

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why should we place 9KV lightning arrestors in 11KV substation ?

9 Answers   DOL, ISRO, Matrix,

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Can anyone please give me the parameters , formula needed to calculate the circuit breakers for building services.Thanks

0 Answers   Bhel,

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IF we have 500kva transformer 11.0/0.415V, 50Hz. How to calculate the current on HT & LT side, how can we consider for its breaker (HT & LT both)? You are requested to solve the question herewith.

3 Answers   Bhutan Power Corporation,

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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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how to reduce the power consumption in office ?

6 Answers  

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What is stacking factor? What is its approximate value?

0 Answers  

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what is NGR in generator?

4 Answers  

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How will calculate losses in an multi core Aluminium LT cable of different sizes & upto what length we can use a LT Cable ?

0 Answers  

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Can a transformer be used as voltage or current amplifier?

3 Answers   BPDB, REB, Riaz,

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PLEASE INFORM ABOUT THE IDEAL TEST RESULTS OF MAGNETIC BALANCE TEST OF TRANSFORMER 33/11 kv DELTA-STAR T/F

0 Answers  

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