Interested to Buy Any Domain ? << Click Here >> for more details...
1) What is difference b/w impedence relay and differential relay?
2) what are substations equipments?
3) what is difference b/w circuit breaker and isolator?
4)what are the types of circuit breakers?
5) which medium is mostlty used in circuit breakers and why it is used?
- 1 Answers
- 5016 Views
- NTDC, I also Faced
- E-Mail Answers
Answer Posted / aariz ali
1)impedence relay is used for transmission lines protrction and diffrential relay is used for alternator protection.
also you can give their operational dirrerence.
2)ans: transformers, circuit breakers, isolators , realys etc ETC....
3)ans: the main difference is of the arc quenching medium which is only used in circuit breakers but not in isolator.
4) ans: air blast, vaccum, sf6, oil circuit breakers.
5)ans: SF6 medium is most commonly used because:
-sf6 gas is non inflammable so there is no any risk of fire in these ckt breakers.
-sf6 has high dielectric strenght so these breakers have short arcing time
- due to enclosed circuit these breakers have no moisture problem.
-small noise
etc etc.
| Is This Answer Correct ? | 3 Yes | 1 No |
Post New Answer View All Answers
What is the actual meaning of thermal power efficiency ?
what is the reason for indication of light in the earth lamps of main switchboard.if there is an earth why does one lamp get dim and the other two bright.
Under wat condition statcom operates as an inductor for the transmission line?
two phases with neutral supply can be taken in 3C X 10 sq.mm cable .
what is the transformer turn ratio formula and give some examples?
how load of a turbo generator can be increased
What happens to voltage when current through the inductor is constant?
Which device of PlC does share load between DG sets when DG are running in perallel?
at what base you will tell the direction of rotation of dc motors and generators?
is it possible for different brand of H.V transformers to run or operate in parallel to each other? if so how much disturbance can this affact the H.V bus bar?
When a square wave is applied to primary of a transformer then what will be output wave form of secondary ?
Explain The Application Of Storage Batteries?
what is the breaking capacity and making capacity of circuit breaker and how
What current flows in the transformer primary when its secondary is open?
Can we use BS 6651 and BS EN 62305 standards for computer room lightning ptotection in substation?
