Answer / s.v.vaze

Neutral is the point formed by connection of 3 phase windings of any 3 ph Xmr/motor or generator. In case of solidly grounded system this neutral is earthed. IN case of Generators it is earthed through impedance to limit fault current.
Earth is a system which provides a path for current to flow into the earth. It acts as a Protection by providing early isolation of faulty section in case of any fault.

where they are using surge arrester and lighting arrester? how they connect? what is the purpose of that?

1 Answers  

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why we use dc motor instead of ac motor?

7 Answers   Air Force,

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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?

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Why the arms of delta in a delta-wye power transmission system are kept constant??

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difference between EMVT, PT & CVT ?

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how to calculate kA rating of device?

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Air refrigeration cycle works on the

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what is the AC Plant and how can do the work with parts and picture tell us 150 Tr

0 Answers   Wipro,

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