Answer / abhishek ranjan

it is used in overhead line.when some unconditional current
occur in transmission line then circuit will break.
after removel of unacceptable current ckt. will
joint.

Answer / ashish vohra

A Breaker is used to protect the electrical network in a
fault condition. In case of fault protection relay
actualtes the trip coil of the circuit breaker which opens
the breaker contacts and isolate the faulty section o the
network

Answer / chudasama hardik

a braker is the protaction device in to the ckt and when
unconditional current will flow in to the ckt so ckt will
be brak by braker. and also during the brek time arc will
be quench by the breaker by it's phinomima and produce
insulation meaduen bet'n two contects and also prevent the
produce recovery voltage bet'n two contacts.

Answer / sanjana singh

circuit breaker carry current under normal condition. and trip or break the circuit under abnormal condition.

how was your last weekend.

0 Answers   HCL,

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need help, please can someone tell me how can i calculate the main breaker and branches breakers to distribution panels (MDB) depending on the load ampere .. i really need it but can't find any site >>

3 Answers  

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there is a line fault some where on the ove head distribution line. how will i locate the fault for clearing it? ofcourse i have to megger the line but what information makes me clear that the fault is in that section of the line?

2 Answers  

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HELLO EVERYONE, I RECENTLY HAVE FOUND ONE PROBLEM, I WAS TAKING NO LOAD TRIAL OF AN HT MOTOR 920 MOTOR , 1440 RPM , 6.6 KV, WITH AUTO TRANSFORMER. AT 450 V, LOAD WAS 40 AMP AND SPEED WAS 250 RPM. BUT AS WE INCREASE VOLTAGE FROM 450 TO 480V, LOAD BECOME 41 AND SPEED REDUCED TO SOME RPM . SO WHICH PHENOMENON ACTED HERE FOR REDUCING SPEED.?? AND IS IT HAPPENING ALWAYS OR IT IS RARE? I ALSO HAVE FACED SUCH PROBLEM WITH FEW LT MOTOR ALSO.

0 Answers  

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Load transfer in 11kv double busbar switchgear - operation.

0 Answers   KSEB, L&T, Siemens,

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WHY LATCHING CURRENT IS GREATER THATN HOLDING CURRENT?

1 Answers  

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During the troubleshooting of an inoperative shunt generator, you found the voltage to be 2+ volts; what is known from this. Is it (1). odds are the armature is good (2). odds are there is no field current flowing in field windings (3). odds are the armature is bad (4). both 1 & 2 are correct (5). both 2 & 3 are correct

2 Answers   Air Force,

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which connection is there in a rotor of the motor

2 Answers   All Trades Electrical, HAL,

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in transmission line, if the load is suddenly increased at the receiving end of the system the phase shift will (a)decrease (b)becomems zero (c)increase (d)not be affected

4 Answers   Getco,

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transformer core are laminated for what purpose?

9 Answers   NTPC,

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In what cases (circumstances)we should apply P controller, PD controller, PI controller & PID controller ?

0 Answers  

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WHY THE FREQUENCY IS 50 HZ IN INDIA.CAN WE USE SOME OTHER FREQUENCY.IF SO WHAT IS THE RANGE AND WHAT WILL BE THE EFFECT IN PRESENT POWER SYSTEM IF WE CHANGE THE FREQUENCY AS YOU SUGGEST ?

32 Answers   L&T, MCL,

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