when we are going to higher voltage level in substations why we are using Sf6 c

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

Question Posted / reddy.4175

3 Answers
5989 Views
I also Faced
E-Mail Answers

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

control wiring purpose,standards, ferrule code standard, interlock, schematic, symbol

1 Answers

I have motor 1500 HP and , 4160 V , 60 HZ , then i need the rating of transformer which can feed that motor ??

0 Answers Elmaco,

why transformer does not obey ohm law?

27 Answers

A heater capacity is 3.0 KW on 415V . if supply voltage is 380Volt . what is heater capacity on 380volt . and how calculate and give formulas . Prakash veer singh Roto power Engg.

5 Answers

phase colour is indicated by R Y B (red yellow blue) but in transformer i have seen U V W instead of (R Y B) have any meaning of this

3 Answers Areva, Kim Yew,

Why the efficiency of a three-phase induction is the motor is less than that of a three-phase transformer?

0 Answers

How to prepare electrical preventive maintenance plan & shedule of machine tools in manufacturing unit.

0 Answers DRJ ARDE,

why active power is called as real power or working component.What is the exact function of active, reactive & apperent power.

3 Answers

What are the uses of stepper motor?

0 Answers

why HT line voltage is multiple of 11.eg11kva,33kva,132kva

2 Answers HP,

What will happen if 230V DC motor connected to 230V AC Supply?

15 Answers Ashok Leyland, BOC, JSW, ONGC, RRB, TRB,

how can i get elcctrical supervisor license & Certificate of competancy in gujarat? i have completed my B.E (Electrical) course from gujarat.

2 Answers NTPC, Welspun,

For more Electrical Engineering Interview Questions Click Here