Golgappa.net | Golgappa.org | BagIndia.net | BodyIndia.Com | CabIndia.net | CarsBikes.net | CarsBikes.org | CashIndia.net | ConsumerIndia.net | CookingIndia.net | DataIndia.net | DealIndia.net | EmailIndia.net | FirstTablet.com | FirstTourist.com | ForsaleIndia.net | IndiaBody.Com | IndiaCab.net | IndiaCash.net | IndiaModel.net | KidForum.net | OfficeIndia.net | PaysIndia.com | RestaurantIndia.net | RestaurantsIndia.net | SaleForum.net | SellForum.net | SoldIndia.com | StarIndia.net | TomatoCab.com | TomatoCabs.com | TownIndia.com
Interested to Buy Any Domain ? << Click Here >> for more details...


when we are going to higher voltage level in substations why
we are using Sf6 circuit breakers instead of Vacuum circuit
breakers.

Answers were Sorted based on User's Feedback



when we are going to higher voltage level in substations why we are using Sf6 circuit breakers inst..

Answer / vinod

SF6 CKT BREAKERS ARE ELECTRONEGATIVE THEY ABSORB FREE
ELECTRONS PRESENT AROUND CONDUTORS,AVOIDING BREAKDOWN.

Is This Answer Correct ?    5 Yes 0 No

when we are going to higher voltage level in substations why we are using Sf6 circuit breakers inst..

Answer / shanmugam.s

It is a better Arc quenching medium, So when the voltage
level raises we go for SF6 breakers instead of Vacuum
Circuit breakers.

Is This Answer Correct ?    1 Yes 0 No

when we are going to higher voltage level in substations why we are using Sf6 circuit breakers inst..

Answer / raul

sf6 CB has far superior arc quenching properties as
compared to other CBs due to tremendous amount of capacity
of SF6 gas to absorb free electrones in the contact
space.........so the dielectric strength is very
high...........and also there is a cost consideration
factor which makes the use of VCB a less viable
proposition.............

Is This Answer Correct ?    0 Yes 0 No

Post New Answer

More Electrical Engineering Interview Questions

what is fault level in 66kV system?

3 Answers  


how the magnetic flux is said to be rotating & alternating?

4 Answers  


What is an iron loss or core loss pi?

0 Answers  


what is the formula of starting current of 3phase and 1 phase motor???

0 Answers  


what is meant by tranformer impedance?

0 Answers   Synergy,


when measure the core loss of three phase distribution transformer or three phase reactor loss, one phase shown negative watt loss. why??

0 Answers  


depletion layer will form beforre biase or after bias ?

2 Answers  


1 HP = how many Kva

5 Answers  


what will happen if any motor runs long time with star connection in400vA.C. system

5 Answers  


During a temperature rise test of a bus duct, it is fed with 415 volts at 2000 amperes. Why dont we get an electric shock if we touch the bus bars?

7 Answers   ABB, SDBL,


In Dyn11 power transformer if any one of the 3 phases connected to earth in star connected side then please explain effect of the current flow in delta connected side of transformer.(In this case if one phase is shorted to ground in star connected side then we observe the current flow in two phases only not three phases in delta connected primary side. Please explain why it is so?)

0 Answers  


15 suspects are rounded by the police and questioned about a bank robbery. Only one of them is guilty. The suspects are made to stand in a line and each person declares that the person next to him on his right is guilty. The rightmost person is not questioned. Which of the following possibilities are true? A. All the suspects are lying. B. The leftmost suspect is guilty. B only

2 Answers   TCS,


Categories
  • Civil Engineering Interview Questions Civil Engineering (5086)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4456)
  • Electrical Engineering Interview Questions Electrical Engineering (16639)
  • 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)