Answer / nagendra

Whenever a fault occurs the circuit breaker trips.Reclosing of the breaker automatically when the fault on the system cleared is known as auto reclose system in circuit breakers

Answer / raul

basically there r 3 types of faults..... transient fault
(80%), semi-permanent fault (12%) and permanent faults
(8%). transient fault occurs only for a small duration, the
CB is opened for a short duration of time so dat d cause of
failure is cleared and the line is re-closed by closing the
CB. for semi-permanent faults which r basically due to a
twig falling on d line or a bird spanning around a
conductor.......the auto-reclosing after the cause is burnt
away.........and finally the permanent faults ie single
phase permanent fault n 3phase permanent fault.....for 1-
phase fault, the remaining two phases r operational n the
faulted phases is taken out for repairs n after d repair is
done the line is reclosed n for the other 3-phase fault,
the complete 3-phases r taken off for repair n after d
repair is done, all d 3-phases r reclosed

Answer / vinod

Auto reclose is using in transmission line circuit breaker
with selection of single phase, three phase or single and
three phase.

In transmission line there is chance of momentery fault,
based on the area and lenth the time and times of auot
reclose being selected.

Answer / tarun purohit

When any fault occures in line,the circuit breaker trips the supply off to the line.This is called the auto reclose system in Circuit breakers.

Can we manually synchronize two DG sets of same ratings manually without using speed biasing ? If yes then how?

4 Answers  

---

how to converate kva to kw ?

4 Answers  

---

what is relation between vector group of transformer and its load hormonics?

1 Answers   Sanmar,

---

Do you know how to measure the earth resistance?

7 Answers   Manhattan,

---

how to setting Load amps tripping time and extra settings for load Transformer protection relay with RMU panel using C&S model relay..?

0 Answers  

---

Auto transformer starter gives the same effect as star/delta strater if its turn ratio = A 0.5 B 0.67 C o.66 D 0.577

1 Answers  

---

What is the difference between diesel generator engine with and without turbo charger with the same capacity?

0 Answers  

---

When star connection of motor is use?

1 Answers  

---

how many test is necessary for 27mva transformer.

3 Answers   HEG,

---

what will happen when two dc motors are connected to each other and anyone of them rotated?

1 Answers  

---

in dc machines in the armature nature of power is ac but why we take rasistance instead of impedance?

1 Answers  

---

Why should we hire you over the others waiting to be interview?

0 Answers  

---