Answer / vinod

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

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.

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.............

What is difference between Electrical & Electronic Device? 

7 Answers   AZ Engineering, Vodafone,

---

generally the electrical equipments not to be operated at leading power factor, why?

2 Answers  

---

In VSD (variable speed drive)I/P and O/P connections given wrongly what will happen?

5 Answers  

---

what does the transformer connection symbol YNaod1 mean ?

3 Answers  

---

Why phase sequence ryb called colours.

1 Answers   MS Life, NTPC,

---

whether inrush current for lamps or capcitors should be considered cable sizing to feed that load.

1 Answers   Cipla,

---

HAT IS THE EFFECT OF LOW POWER FACTOR ON THE GENERATING STATION?HOW WILL YOU IMPROVE THE LOW POWER FACTOR?

1 Answers  

---

What r the specification furnishid in motor name plate?

5 Answers  

---

HOW TO BUILD THE SINGLE PHASE TO THREE PHASE CONVERTER? CAN PROVIDE ME CIRCUIT..THANKS

0 Answers  

---

WHAT IS DEGREE OF COMPOUNDING IN D.C MACHINE MEANS? HOW TO READ THE OPERATING CHART FOR ANY ELECTRICAL MACHINES?

0 Answers   Coal India, Ghana Grid Company,

---

Why is the earth pin in a 3-pin plug the longest and the thickest?

10 Answers   IBM,

---

To check the earth condition (In plug points); the voltage between earth and Neutral is in below 5 volts. Is it correct

6 Answers  

---