Why we use shunt coil in breaker??????????
Answers were Sorted based on User's Feedback
Answer / i.senthil kumar
if
if it is happened any earth fault or short circuit to
energized the shunt coil,immediately tripped the ACB
Is This Answer Correct ? | 18 Yes | 4 No |
Answer / md waseem khan
Shunt trips are devices used for the remote
instantaneous opening of the air circuit
breaker. They are generally controlled trough
an N/O type contact. The actual offer of
shunt trips proposes two supply voltages
(110 V and 220 V), both compatibles with AC
and DC currents. The shunt trips are already
equipped with a special fast connector, to
be directly inserted into auxiliary contacts
block. An auxiliary contact is connected in
series with the coil, cutting off its power
supply when the main poles are open.
Is This Answer Correct ? | 9 Yes | 2 No |
Answer / gopal
We can't open relay contacts With out shunt trip coil. So it is essential to open circuit breaker during fault condition.
Is This Answer Correct ? | 1 Yes | 3 No |
Answer / s.krishnamoorthy
the shunt coil 3phase supply any one phase not come that
will triped acb.
Is This Answer Correct ? | 2 Yes | 19 No |
If two Transformers are connected in parallel having impedance of 50KA in both transformers will the impedance increase or decrease after connecting transformers in parallel?
What is meant by RVT and NDR ? expansion and details of it
Why neutral is used in electrical system?
if we increase the frequency given to a transformer then wat will happen to the transformer size, whether it will increase?
If ROC does not lies inside unit circle,then ? a) Fourier transform converges b) Z transform converges c) Hatly transform converges d) Colpit Transform converges.
I have a 3 phase 600 volt prim. feed and a 120/208 sec. Isolateing tranformer .We are using this system for safety against shock . What is the proper grounding ?? Does the common on sec. get earth ground ???
can i have the methods of speed controls for 3 phase AC MOTORS.
what is cogging and crawling
What is mean by voltage & current.
How would you supply a single house hold load from a 3-phase supply coming out of a sub-station?
WHY THE DIMENSION OF TWO SAME RATED MACHINE IS DIFFERENT ?
A 15 kw squirrel cage motor having a maximum efficiency of 90% on a continuous full load has temperature rise of 42 degrees celcius after 30 min and 52 degrees celcius after 1 hr under the above operation conditions. a) calculate its final steady state temperature rise on continuous load and the heating time constatnt. b) if the motor is operated on a short load for 9 min estimate its temperature rise. c) calculate the maximum overload that can be applied on a short, 9 min rating so that the temperature rise is the same as the final steady state temperature rise on continuous load.