what is the minimum recommended leakage current of an earthed cable connected to the body or skid of an alternator

0 Answers  

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WHAT IS DEGREE OF COMPOUNDING IN D.C MACHINE MEANS? HOW TO READ THE OPERATING CHART FOR ANY ELECTRICAL MACHINES?

0 Answers   Coal India, Ghana Grid Company,

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how can i find ct ratio of meter by seeing name plate of meter and how it should be used in MF calculation if it shows only-/1???

0 Answers   Harshal Electrical,

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what is difference between sub-station and switch yard.

16 Answers   Bhel, Ravate,

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Why we connect the capacitor in Delta?if we conect in Star what will happen?

9 Answers  

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Why insulation layer of a High Voltage cable is more than a current carrying cable?

3 Answers  

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Why TAP changer provided in primary side of HT transformer ? and why not in secondary?

9 Answers   ABB, Reliance,

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Are generator action and motor action relates to a particular machine only?

2 Answers  

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how much mininmum length required to conduct a DC Hipot Test on 33kV AC Cable with 45kV DC? Is it 20meter or Less then 20?

0 Answers   ABB,

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inductive power factor is benefit compare to capacitive????

3 Answers  

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what is MULTIPLYING FACTOR in substations??

2 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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