in 11kv generators the neutral point is connected to earth via earth coil while in the 33 / 11 kv transformer the neutral point is connected to earth via earth resistor why? 



in 11kv generators the neutral point is connected to earth via earth coil while in the 33 / 11 kv tr..

Answer / vikas

This is neutral earthing concept. Normally for the generators of higher ratings we connect neutral to ground through a coil (peter son coil) to reduce the heavy fault current if fault occurred in the generators (Ph-Ph to fault Ph-body fault etc). Same concept for the transformer also but resistance grounding is sufficient for the 33/11kv transformer.

Is This Answer Correct ?    3 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

When a capcitor is used on 440 v thenthis is kvar rating 25kvar .my question is that when we use this capcitor  use 480 v &525 volt .how much kvar increase . Plz give my question ans. And give answer with formula .my mail id is rohitashsaini013@gmail.com

1 Answers   Neptune,


what is the difference between CT and CVT in EHV Sub Stations

4 Answers   Hofincons, Lanco, TATA,


Efficient electrical earthing in hard rock area

0 Answers  


explain why tap changer is always connected to high voltage winding side of the transformer.

10 Answers   IOCL, UPPCL,


A 150KW 440V motor is need to replace in the field instead of faulty one. what are the main parameter should I need to check?

1 Answers  






if its possible for step up or step down DC volage directly ? possible means how we can do it ?

5 Answers  


what will happen if we double the input frequency of a transformer keeping the voltage constant?

6 Answers  


what is the difference b/w KVA and KW? the transformer are mentioned KVA rating and the loads are mentioned KW.why?

2 Answers  


In EHV tranm. The conductors are …….. a) Cu roads b) Cu bars with Si c) Cu tube with Si plate

2 Answers   Engineers India Limited,


what you mean by transformer neutral earthig

1 Answers   IOCL,


check list of maintenance of transformer?

11 Answers   ABC, Cosmos, EPRON, Essar, Godrej, Hescom, Infosys, KPTCL, TCS,


In ACS 1000 drive we are using 12 pulse converter,why don't use 3 pulse converter.

0 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5085)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4452)
  • Electrical Engineering Interview Questions Electrical Engineering (16638)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1095)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)