Answer / ritesh mishra

A circuit breaker is an automatically operated electrical
switch designed FOR OPRETE IN ABNORMAL CONDITION I.E. to
protect an electrical circuit from damage caused by
overload or short circuit. &
In an electric power system, switchgear is the combination
of electrical disconnect switches, fuses or circuit
breakers used to control, protect and isolate electrical
CKT.

Answer / ghanshyam_singh

i am satisfied with Mr. Ritesh

circuit breaker,as ritesh said is a protective device, while CB is a part of switchgear.

Answer / balachandhar.a

circuit breaker is a
protective device
used to isolate the
faulty part from the
healthy part of the
system.it is working
by the command
given by the relay
about the fault.and a
switch gear is
nothing but the
combination of
relay ,cb and other
protecting devices.

Answer / arun

switchgear is a group of device that give protection +switching.cb is a part of switchgear

Answer / m.radhakrishnan

Circuit Breaker is switchgear equipment. when short ciruit
condition abnormal current flow in the circuit. To protect
all the equipment in the power system network against
excessive over voltage or excessive current.

Answer / amarendra barad

Hi all,
Ok,But I think CB is a protective device which is designed
for working in noload condition as well as in load
conditions and automatically oprated but SG is also a
protective device which only can be used in noload
conditions and manually oprated.

what is a drive ?

3 Answers  

We know that primary transmission is done to reduce current so that i^2*r loss could be minimised but according to ohm's law v is directly proportional to i,which indirectly means higher potential difference means larger current?so how the current is minimised in high power transmission line??

2 Answers  

previous year paper of ntpc bhel for degree in electrical enng

0 Answers  

What is the difference between Neutral and Eatrh?

8 Answers  

what will happen if a 3 phase motor is connected to a single phase circuit and vice versa?

3 Answers  

explain the working principal of the circuit breaker?

5 Answers  

what is the purpose of using semiconductors in HT cables

3 Answers   Sterling,

what is the difference between linear choke and suction choke?

0 Answers   BARC,

When in a large power system if the demand of power is larger than the generated power the frequency of the power system drops.(assume the rated frequency is 50Hz and now it is 49Hz) So does this mean the demand is totally supplied with a lower value of generated power in a lower frequency?

1 Answers  

What is the formula for calculating no-load current?

0 Answers  

WE ARE PLACE A NEW 75 KW MOTOR FOR JPF.IT IS CONNECTED IN M.C.C. WHEN WE ARE STARTING M.C.C.INCOMER IS TRIPPED.THEN WE ARE CONNECTED IN P.C.C WITH A MM30 RELAY PROTECTION THEN WE ARE STARTED MOTOR WILL RUN SMOOTHLY.

0 Answers  

what is the relation between frequency and inductive reactance in a d.c supply?

2 Answers   L&T,