What do you mean by isolators and circuit breakers?

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / nihar ranjan patel

6 Answers
17392 Views
Bhushan Power Steel, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

What do you mean by isolators and circuit breakers?..

Answer / arjun prajapati

Isolator is mannualy
operated switch used
for maintainanc
purpose to disconnect
one ckt from faulty
parts...ckt breaker is
automatic switch used
for protection purpose
in faulty condition...

Is This Answer Correct ?

33 Yes

5 No

What do you mean by isolators and circuit breakers?..

Answer / nihar ranjan patel

Isolators-An isolators is switch which is used for
isolating a circuit under no load condition only.It is
switched OFF when a high current is flow through the
circuit and heavy spark will be produce.

Is This Answer Correct ?

21 Yes

6 No

What do you mean by isolators and circuit breakers?..

Answer / naresh kumar

circuit breaker operates under faulty conditions only....
where as isolator is operate under no-load
condition..i.e,when a fault occurs on a power system ckt
breaker operates and opens the terminals afterwards isolator
is used to isolate the faulty phase from the operation

Is This Answer Correct ?

11 Yes

3 No

What do you mean by isolators and circuit breakers?..

Answer / raj

the above last two answers are exactly correct, but now a
days we have interlock between braker and isolator also.
isolator opens only when braker is opned. also we have earth
switch attached to issolator to discharge induction voltage
in circuit also enable protection under maintanance.

Is This Answer Correct ?

4 Yes

1 No

What do you mean by isolators and circuit breakers?..

Answer / dinesh namdev

Isolator used in no load codition & CKT breaker break the
supply abnormal condition

Is This Answer Correct ?

3 Yes

1 No

What do you mean by isolators and circuit breakers?..

Answer / elango.k

isolator means its leakage current is less than 2mA when it
is isolated,where circuit breaker is has leakage current
more than 2mA which is not safe for the person working when
it breaker is in off condition.

Is This Answer Correct ?

2 Yes

4 No

Post New Answer

More Electrical Engineering Interview Questions

why there is a humming noise in transformer

6 Answers

Explain the operation of variable frequency transformer?

0 Answers

What is the lockout relay

0 Answers

Why carbon brush used in dc motor also why its not used in ac motor?

2 Answers RRB,

Why induction motors draws higher current during starting condition?

1 Answers

If a rotary UPS is in line through grid power; What would be the impact on Power Factor if the load through rotary ups is 25% , 50% , 75% & 100%. Will the power factor reduce with less load?

0 Answers

directional over current relay when acted & how it works

3 Answers NCC, ThyssenKrupp,

what is the use of surge suppresser in 33 KV incoming panel. where it must be installed,inseries with incoming cable surge suppresser must be at incoming of the breaker are outgoing of the breaker

1 Answers Siemens,

In a running D.G set engine and Alternator is revolving at 1500RPM but no output in the terminal>>>>what to do?? someone told excitation problem ....please advice

3 Answers

what will happen if we double the input frequency of a transformer keeping the voltage constant?

6 Answers

what is the highest transmission voltage in India till now?

36 Answers Bhel, Electrical,

when will cause the negative sequence falut in electrical system?

2 Answers Schneider,

For more Electrical Engineering Interview Questions Click Here