Interested to Buy Any Domain ? << Click Here >> for more details...
If the circuit breaker will not close or it will trip, what
will you do?
- 3 Answers
- 6511 Views
- I also Faced
- E-Mail Answers
Answer Posted / asif khan
I can follow below trouble shooting steps,
check the error code to see if there was any short ckt or
earth fault, if there was (check for cable termination if
the connections are not burnt out due to short circuit,
check earth resistance and current voltage etc. of the
terminals) eliminate the fault then it should work fine.
Check the control wiring of the breaker check the fuses,
contactor operations etc.
check the under voltage release to see if it did not trip
due to under voltage or over voltage. check shunt trip
mechanism.
check if breaker is not overheated as a breaker may not
close if magneto thermal release is tripped.
check closing coil operation and see whether breaker gets
charged automatically with help of the motor.
if none of the above problem found, Rack out the
breaker(keep it in isolated position)trip the breaker
manually a few times and try closing it again should work fine.
In case it does not happen you can try and by pass the
breaker with help of crocodile pin Jumpers ( In case of
Emergency), but one need to be extremely careful and should
ensure that the incomer supply to breaker is turned off
while doing it, as a high risk is involved. Also you should
be confident that breaker did not trip due to an abnormal
condition.
Note: Some breakers indicate nuisance fault as well
Further,
| Is This Answer Correct ? | 2 Yes | 2 No |
Post New Answer View All Answers
What is Surge Capacitor? Why it is require in Generator Circuit Breaker,inspite of surge arrester?
if a 3phase 100kva distribution transformer , 400 v,50 hz, 4-wire system is loaded at 160 k.w mostly 1-phase Lighting & Airconditioning split a.c load what will be the net effect on the power system in terms of voltage, powerfactor, current , efficiency of xformer
What is Servo Ventilated Motor?
What are books to be referred for KPTCL exam?
Please tell me in DETAIL about the following 3 types of fuses or recommend me a good power system protection book or a website link ? 1.Dropout Fuse 2.Striker Fuse 3.Empulsive fuse (not sure if its impulsive or explosion fuse , sorry)
transformer spections :: input voltage 0-110-230v; output volage 0-10-12-14v; amp=3A using CRNO CORE, capcaity=50VA primary turns = ? ; secondry turns =?
r we are using in gas turbine mark (5) frame (6) (made in india Bhel 1997) Ā
What are the different losses In a de mac1une'! t.xplam
What is Faraday's law
what is the operating time for LBB and how does the LBB relay realise whether cb is opened or not?
what kind of technical test that i need to learn because i have an interview tomorrow.. please someone help me..
If anyone would like to know or practice for FEWA papers contact me on mohamedrashad2@hotmail.com Just completed the supervisor exam in April 2021
What is the direction of current flow in ct secondary...means if the current is flowing from P1 to P2 then what will be the direction of current flow in ct secondaryw
how to calculate
An ELHNC 80amp 240v 30mA RCD is tripping periodically, every 30 - 180 seconds is it safe to disconnect the protection circuit?
