difference between isolator and circuit breaker?????

Categories >> Engineering >> Electrical Engineering
Suggest New Category

Question Posted / thrimurthy

7 Answers
13475 Views
Enercon, I also Faced
E-Mail Answers

Answers were Sorted based on User's Feedback

difference between isolator and circuit breaker?????..

Answer / gtmanikandan

Isolator can be open in off load but Circuit Breaker can be
open or close in off or on loda

Is This Answer Correct ?

26 Yes

3 No

difference between isolator and circuit breaker?????..

Answer / kunal

An isolator can be operted only at no load condition,because
there is no arc-quenching medium in isolator,where as
breaker can be operated at both On-load condition & off-load
condition,since it has arc-quenching medium.

Is This Answer Correct ?

22 Yes

0 No

difference between isolator and circuit breaker?????..

Answer / suresh

You cant open a Isolator under load, while CB can be.

Is This Answer Correct ?

14 Yes

2 No

difference between isolator and circuit breaker?????..

Answer / esam hamdy

An isolator is the gate of the voltage while a breaker is
the gate of the current in a bay. The isolator opens and
closes only on zero current while the breaker opens and
closes on zero current, full load current and short circuit
current so, the breaker has arc-quenching medium and the
isolator has not.

Is This Answer Correct ?

5 Yes

1 No

difference between isolator and circuit breaker?????..

Answer / trimurty prasad

Isolator can oparate in witout load.in ckt breaker we can
oprate with load and fault condition also.

Is This Answer Correct ?

4 Yes

0 No

difference between isolator and circuit breaker?????..

Answer / dharmesh

Circuit Breaker is a device which can
Make or break circuit under normal conditions either manually or through remote control.
and
Isolator or Isolating Switch is a device which is used to disconnect a part of the system for maintanance purpose and repairs.Isolator can open a circuit under no load condition only.If two isolators are connected on either sides of circuit breaker,then the circuit breaker must be opened before opening the isolators.
After perfoming maitanancee work on the circuit breaker,isolators must be closed first and then the circuit breaker must be closed to bring the system into operation.

Is This Answer Correct ?

3 Yes

0 No

difference between isolator and circuit breaker?????..

Answer / sakkaravarthi soganur arakonam

isolator is on off-load devices,
circuit breaker is on - load device

Is This Answer Correct ?

2 Yes

2 No

Post New Answer

More Electrical Engineering Interview Questions

In ht capacitor ckt we are using LBS Panel it having isolator with fuse, one of HT fuse flash over, so what is reason behind this event.

0 Answers

Why the output of OP-AMP is always less than Vcc?

0 Answers

What is the formula to calculate the rating of a three phase trnasformer

1 Answers

why voltage rating of transformers are in multiples of 1.1?

3 Answers

why and where we use early make & late break contacts in protection?

0 Answers

why transformer rating is given in kva?

2 Answers

why the undervoltage relay's interlock is used in earthswitch closing operation of the 400kV line scheme?

2 Answers

what is the advantages og idmt relay over magnetic relay??

0 Answers Bhel,

please design a rectifier with batteries for below requirement and also explain how you calculate this solution, Load = 700Amp DC Backup time = 6 hour. please explain briefly ?????

1 Answers GNFC,

Why 15Amp. MCB is suitable to carry load of 1.5Ton Ac please Explain?

0 Answers

What is harmonics in AC waves. How it is generated? How it will effect the system network? how can eliminate it?

2 Answers

How many types of faults are there in 3 phase power system?

0 Answers

For more Electrical Engineering Interview Questions Click Here