Interested to Buy Any Domain ? << Click Here >> for more details...
What is the difference between Isolator annd Circuit
Breaker.
- 21 Answers
- 77958 Views
- ABB, Lanco, NTPC, Power Grid, RInfra, I also Faced
- E-Mail Answers
Answers were Sorted based on User's Feedback
isolator is a off load device which is used for isolating
the downstream circuits from upstream circuits for the
reason of any maintanance on downstream circuits. it is
manually operated and does not contain any solenoid unlike
circuit breaker. it should not be operated while it is
having load. first the load on it must be made zero and
then it can safely operated. its specification only rated
current is given.
but circuit breaker is onload automatic device used for
breaking the circuit incase of abnormal conditions like
shortcircuit, overload etc., it is having three
specification 1 is rated current and 2 is short circuit
breaking capacity and 3 is instantaneous tripping current.
| Is This Answer Correct ? | 325 Yes | 16 No |
Answer / senthil kumar
isolator is a off load device ie we cant able to close the
isolator under onload condition if we close the isolator
under onload it will damage the isolator but breaker is a
device having high withstand capacity(the withstand
capacity is based on application)so we can able to open
&close the breaker under both onload &offload
conditions......and also while opening &closing under
onload arc will appears at the contacts. the isolator have
no special arrangement to extinguish that arc but in
breaker we have some special arrangement to extinguish that
arc.
| Is This Answer Correct ? | 42 Yes | 11 No |
Circuit breaker is the device such as ACB's or MCCB's which
trips the entire system if there is a failure. By the entire
system we mean the elements connected to the particular
busbar of that crcuit breaker.
An isolator is used to cut out a portion of a substation
when a fault has occured on a particular portion of the
whole station to rectify it and repair it and in the
meanwhile the other devices operatee without being affected
by the faulty part.
| Is This Answer Correct ? | 24 Yes | 3 No |
Answer / azeezur rahman
isolator is a off load device which is used for isolating
the downstream circuits from upstream circuits for the
reason of any maintanance on downstream circuits. it is
manually operated and does not contain any solenoid unlike
circuit breaker. it should not be operated while it is
having load. first the load on it must be made zero and
then it can safely operated. its specification only rated
current is given.
but circuit breaker is onload automatic device used for
breaking the circuit incase of abnormal conditions like
shortcircuit, overload etc., it is having three
specification 1 is rated current and 2 is short circuit
breaking capacity and 3 is instantaneous tripping current
| Is This Answer Correct ? | 20 Yes | 8 No |
Answer / dipak patil
the main difference beetween Isolator and CB is that,
isolator has no Making or braking capacity, that is that it
cann't break or make the circuit that carrying load current
unlike circuit breaker. CB can make as well as break the
circuit under normal load condition or under fault
condition.Under fault condition protection operates CB.
Both Isolator and CB can be operated manualy or
automaticaly as per application.
| Is This Answer Correct ? | 12 Yes | 5 No |
Answer / ramakrishnan.k
Isolator to be operated manually like switch.And circuit
breaker isolate the circuit automatically when there is
fault or over load in the circuit breaker.
| Is This Answer Correct ? | 14 Yes | 8 No |
Answer / venkatesan.j
An isolator is an off load device witch can be operated
only when the current is zero where as the Circuirt breake
ris an on load devce whitch can be operate both in live and
current zero condition.
| Is This Answer Correct ? | 10 Yes | 4 No |
Answer / reddyprasad
isolator is a off load device which is used for isolating
the downstream circuits from upstream circuits for the
reason of any maintanance on downstream circuits. it is
manually operated and does not contain any solenoid unlike
circuit breaker. it should not be operated while it is
having load. first the load on it must be made zero and
then it can safely operated. its specification only rated
current is given.
but circuit breaker is onload automatic device used for
breaking the circuit incase of abnormal conditions like
shortcircuit, overload etc., it is having three
specification 1 is rated current and 2 is short circuit
breaking capacity and 3 is instantaneous tripping current.
| Is This Answer Correct ? | 9 Yes | 4 No |
Answer / vaika
circuit breaker is an automatic device capable ofmaking or
breaking an electrical circuit under normal or abnormal
conditions such asshort circuits . we can operate this in
onload condition.
isolator switch is used to make sure that an electrical
circuit can be completely de-energized for service it is an
off load operating device
| Is This Answer Correct ? | 3 Yes | 0 No |
Answer / rupeshwar kumar priy
isolator is off load device because in case on load occur
fault condition when contact is open arc is produced and
isolator have no arc quenching medium so firstly operate
circuit breaker.
circuit breaker is on load device because on load fault
condition arc is produced CB have arc quenching medium
air, oil etc. which is helpful and so it break the circuit
and after isolator open to maintenance process start but in
case contact first isolator is closed then circuit breaker
is closed.
| Is This Answer Correct ? | 3 Yes | 0 No |
why put integration for capacitorand differation for inductance
what is the type of pilot wire in pilot relay?
Which types of Gases occure when mineral oil burnt
What is mean A32 B32 C32 D32 in mcb(miniature circuit breaker)
Explain about Dubai electrical sysaem? Explain about Dubai drinking water system? Explain about Dubai Burj tallest building Electrical,Water.etc.. maintenance system?
what is the effect of connecting three phase supply lines to three phase auto transformer output terminals through a fuse of 10Amp and a circuit breaker (MCB). Is this connection permanently destroy the transformer?
Actuality I have at home electrical panel with 220v 50hz, and I want to converter from there to 110v 60hz, to wiring on the half of my house. Also I like to keep another half of my house with the original 220v 50hz. What is the best and safety way to do?
can we synchronize star system generators with delta system transmission line ? and how ?
dear all i am kumara now current working in electrical designing of control and relay panel i want learn some substaion design then any book are available. pls mention name and authour
i work as a technician at a private company.. i used to take amp reading for certain appliances such as air con.. the problem is when i clamp the neutral, wire there is a current reading.. from my understanding for single phase system neutral should not have current unless if the circuit is not complete.. yet the air con still work
please give some hindalco placement papers for written exam
why use -48 volt DC power in telecom?
-
Civil Engineering (5086) - Mechanical Engineering (4456)
- Electrical Engineering (16639)
- Electronics Communications (3918)
- Chemical Engineering (1095)
- Aeronautical Engineering (239)
- Bio Engineering (96)
- Metallurgy (361)
- Industrial Engineering (259)
- Instrumentation (3014)
- Automobile Engineering (332)
- Mechatronics Engineering (97)
- Marine Engineering (124)
- Power Plant Engineering (172)
- Textile Engineering (575)
- Production Engineering (25)
- Satellite Systems Engineering (106)
- Engineering AllOther (1379)
