Answer / shailesh rathod

Earth are give a protection to us.Neutral are produce in
three phase star connection and its need finished circuits.

I am designing new project sub station with 220 kV / 11 kV, 40 MVA capacity. This project have many recifier sets, which can generate 3rd harmonics. Now I have to select vector group of This transformer. To minimise 3rd harmonics, what care should I take in selection of Transformer Vecrtor group? If it is Y-Y with open Delta tertiary then what should be the rating & voltage of Tertiary Winding?

0 Answers  

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howmany insolaters needed in 66kv line

9 Answers   Essar, L&T,

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if we convert ampers into kw,which one formula use by us,pls tell me?

11 Answers   ABB,

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If a surge divertor is required to be protected by 32 amp C Curve Circuit breaker does this limit the amount of protection from surges that you will acheive

0 Answers  

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the fuse is use for protection against overcurrent but at normal condition it carry the rated current then how single thin wire carry this current without melting

1 Answers  

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Do we really need wheels for the transformer

1 Answers  

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We say that if voltage in a power system is increased,for a constant power the current will decrease (by P=VI). isn't this in disagreement with the ohms law(I propotional V;resistant const.).Since the resistance of transmission lines remains constant,shouldn't inc in voltage cause inc in current across the transmission line? I have read many articles across the net but still couldn't this figure this out. :( Guyz plz assist me with dis..:)..

4 Answers  

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what you have to see after one week or month from the day of installation of transformer ?

0 Answers  

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how to discharge 3 phase power factor correction capacitors

0 Answers   M S Ramaiah Institute,

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1.Why hydrogen used for cooling in generators 2.Why electrical equipment protected by ground 3.Why earthing for transmission line 4.What is rms value of half wave rectified square wave. If Rms value of actual wave 2amps.

1 Answers   Power Grid,

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What is P.F? Formula for calculating PF in HT side?

1 Answers  

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I have motor of 3 H.P. How i found the rating of capacitor use in it in single phase motor..???

0 Answers  

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