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
- 6626 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
11 kV line deraction check by an Engineer.
Explain how you intend to work under pressure to meet up with deadline target?
Grid fault level [KA]?
i want wipro vlsi placement pattern please send me
ITI r/tv trade APPLY (J.T.O VACANCEY) ALSO INCLUD AITT ELECTRONIC,WRITEEN XAM DONE 23.03.10 BUT NO RESPONCE WHY ANATHER ID gopal_gh007@rediffmail.com
What the main causes of transient interruptions on Over-Head Distribution Lines?
What do you mean by reach and reach the point of the relay?
Difference between RCCB, RCBO and ELMCB.
What are the basic elements used for modeling mechanical rotational system?
As per standard, transformer body earthing and other Equipment earthing (Equipment earthing) did not connect. but in LT side termination we are doing metal glanding in both side Transformer to PCC Panel through armoured cable, now X'mer body earthing and PCC Pane earthing (Equipment earthing) both are connect.is this safe for X'mer or other equipment?
7- What is the Dissipation Factor and the difference between it and Insulation Resistance Test? 8- What is the task (function) of DC and AC reactors in power plant? 9- What is the task (function) of (open delta with earthed) in some types in transformers? 10- What is the base of the selection of the vector group in transformers? 11- What is the zig-zag transformer and its function by drawing in large detail? 12- What is the polarity ? 13- Why we make short between phase(R) in high side and phase (r) in low side in vector group test? Where High Side ( R ,S and T ) and Low Side ( r ,s and t ). 14- What are the time on delay and time off delay? 15- What is the vector group? 15- What is the task (function) of different types of vector group such as Dyn11 , Dd0 , YNd1,……..,?
whats the differece between Exd and Exe
where solid grounding and where grounding through ngr done and why?
what is the difference between changer, converter and transformer?
What is industrial plc
