Answer / a.p.nanjappa

standard says as nearaspossible. we maintain just the
outlet of power transformer bushing-10m for all
400,230,110,66,33,11kv.
we adopt counter and mA indicator in the LA grounding,
LA grounding is separately connected to main earth
grounding system

where can the transformer having vector group Yny0 be used??

0 Answers   GK Power, NEA, Petrotech,

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how many types method in earth testing?

3 Answers   ONGC,

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How to find the voltage drop for short,medium,long transmission lines of a 33kv sub-station?

1 Answers  

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In our plant we have installed new MCC with ELR and CBCT which is detecting some leakage current in the system but it leading to some confusion when to check that in which feeder which is drawing current we put off the whole panel itself but still CBCT detecting some leakage current so can anybody ans me , where i am going wrong or how to detect whether its actual leakage or CBCT malfunctioning.

0 Answers   Saint Gobain,

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we done magnetic balance test for 33KV /440V transformer in our company , but the ratio out is confusing us Voltage applied in RY = 440 , at RB = 320 and YB = 60 RY 440 = ( RB + YB ) 380 only Please let me know what type of problem is it.

2 Answers  

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How eddy current generation support the idea of train braking?

0 Answers  

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how unidirectional torque is produced in DC motor?

0 Answers  

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how to changeover ups in this power failur time?

0 Answers   Essar,

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what is excitation/

0 Answers   ABB, Tata Steel Limited,

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Tell me harmfull effects of over voltage,under voltage,spike,surge,transient & noise.

1 Answers  

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Why we use 4-20 mA Analog signal for the PLC input? Why not 0-20 mA? Why not 5-25 mA?

0 Answers  

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what happens when one of the phases out 0f 3 phases been removed under working condition and no load condition will the machine run if so plz send me why

2 Answers  

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