Answer / sachin k

We can use Phase sequence meter to identify the phase
sequence like R Y B

What are the various methods for effecive earthing in a factory in a rocky terrain, where soil resistivity is extraordinarily high? The usual method of 3 m deep earth pits is not serving the purpose.

4 Answers  

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how to reduce the power consumption in office ?

6 Answers  

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What are the Steps for Testing of 20MVA (make:-CGL) Transformer? How many Test we have to do?

2 Answers   BSL,

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how can we check a fully charged battery?

6 Answers   BEML, Singareni Collieries,

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How is the gain affected by the introduction of feedback in a control system.

0 Answers   GE,

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why shoud in High tension cable( above11KV etc.,)a semiconducting material coating will be there on insulation?

1 Answers  

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what are the effects when the frequency is decreased in any ac machine

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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How to size a transformer which will supply power to 550kW,690V motor starting with VFD?

1 Answers  

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what is the difference between KVAR & KVA ?

11 Answers   Bombay Rayon Fashions, Hyundai, Pricol,

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If a air condition consume 2.50 to 3.00 amp then how much it will consume in watts if it is running 10 hours out of 24 hours????

0 Answers  

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can i able to get bhel previous exam question paper?

0 Answers   Bhel,

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