how a circuit breakers work at fault condition .plz give a specified answer.

Question Posted / deepak@ee

1 Answers
2858 Views
Regen Powertech, I also Faced
E-Mail Answers

how a circuit breakers work at fault condition .plz give a specified answer...

Answer / jithendra

circuit breakers works mainly for protection of circuit
so it needed to trip when fault occurs

inside the breakers current transformers (CT's) are placed for sensing the fault

Breaker are operated with closing,triping,shunttrip & Under&over voltage coils

Through ct's fault will sense then pulse will be given to
the triping coil at that time breaker will trip

Breaker will have these faults protections

OVER LOAD
EARTH FAULT
INSTANTANEOUS CURRENT
SHORT CIRCUIT CURRENT

Is This Answer Correct ?

3 Yes

0 No

Post New Answer

More Electrical Engineering Interview Questions

technical questions asked by visa steel interview plg get me!

1 Answers LG, Visa Steel,

Is there any reason that we get shock on touching phase wire because the earth is at neutral potential? Is there any reason that the earth is at neutral potential because the neutral is earthed in apower station

0 Answers

what will happen if earth of 33 kv cable (earthed system) is not connected to earthing pit?

0 Answers

Sir,I have finished my B.E in the Stream of EEE.How Can I get C license for Electrical???Please Tell me the way...My mail ID is praba1003105@gmail.com Cell:7402474123

1 Answers

what is the meaning of 0.5ohm Resistance

0 Answers Vardhman,

Either the Armoured Earthing strip of HT 3 core cable have to pass through CB CT or not , why ???

0 Answers

We have isolation transformer 25kvA & ONLINE UPS 15KvA (3PHASE I/P,3PHASE O/P)where isolation should have connect,before UPS or after please brief.

1 Answers DRJ ARDE,

how can i get the entrance exam papers

0 Answers

how to diffrentiate between ac & dc motors from a distance

5 Answers

Why L.T.Cable voltage rating is 1.1kV,where as system voltage is 0.415kV?

0 Answers HCC,

3ph motor running with unequal kw and different pf what are the reasons

0 Answers UltraTech,

I have a 380 KVA DG set. How can i find out 1. My Fuel Consumption per hr ? 2. Electricity produced in 1 Hr. ? 3. If load varies then how does it affect fuel consumption & electricity produced ? Please HELP !!! Really need an answer.

0 Answers

For more Electrical Engineering Interview Questions Click Here