What is the main application of DUMMY COIL in machines?

3 Answers   IES,

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what is the major difference between LIBBP & HIBBP.. which one is most preferable..

0 Answers   ABB,

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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 calculate 3 phase clearance in Tower line , 33& 11 KV Line and LT Line.

1 Answers  

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what is the VA(Voltampire)? define with calculation?

4 Answers  

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We know that primary transmission is done to reduce current so that i^2*r loss could be minimised but according to ohm's law v is directly proportional to i,which indirectly means higher potential difference means larger current?so how the current is minimised in high power transmission line??

2 Answers  

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How relay coordination has to be done? what are the inputs are required for this? Please explain this with calculation method?

0 Answers   Elektrotek,

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can a 12v dg starting battery(150 AH) be replace by 6 nos of 200AH batteries each of 2v connected in series.

3 Answers  

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for 500mw power production how many range of transformer set in unit please reply if three transformer use .

2 Answers  

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How can we design a HVAC Plant room which includes AHU,FCU,Chillers,Cooling towers, Pumps etc & how will they work? any Drawing if possible?

0 Answers   TCS,

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Name the test signals used in control system

0 Answers  

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what is the sludge current

0 Answers  

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