Answer / deepak

relay is a sensing element which senses the fault ant then sends a signal to circuit breaker.....

circuit breaker after receiving the signal from relay..trips and hence protects the apparatus/device to which it is connected

switch gear is a series breakers connected together to
form a complete protected bus bar with many inputs outputs.

deepak7rules@gmail.com

Answer / tareq harb

relay ca be used to protect against one fault at a time
either overcurrent or undervoltage or underfrequency but
not together, can also be used in switching & control
systems.

Breakers can be used to protect againt too many abnormal
faults in the circuit at one time.

switch gear is a series breakers connected to gether to
form a complete protected bus bar with many inputs outputs.

Answer / amol payghan

Relay is used to detect the fault condition and initiate the operation of the circuit breaker.

Circuit beaker is used to disconnect/isolate the faulty circuit from the bus bar system.

Switchgear are the apparatus used for switching, controlling and protecting the electrical circuit and equipements

Answer / navneet singh

circuit breaker works arc phenomenon.but relay work electomagnet wire winding by me.....

Answer / maheskumar

relay is an protecting device it protect only an particular
connected line

circuit breaker mostly used in transmission so it protect
against high voltage line any fault contition circuit
breaker trip the line and protect the device

switch gear it can be used to prodectbusbar with many input
and outputs

Answer / gajraj

circuit breaker means is the mechanical part, which is
oprated on rely pulse when your fault current is more than
the setting of the relay that time relay sent to pulse of
circuit breaker trip coil
that time operate the breaker that means no any relation in
circuit braeker & relay

in thermal power plant the steam produced is made to cool after falling on the turbine blades. my question is why this is done while the same is needed to heat up again. "jab pani ko wapis garam hi karna hai to thanda kyu karte hai"

11 Answers   Bhel,

what is meant by GOD in transmission system ?

6 Answers   Reliance,

which level of transformer oil has got low dielectric strength ?why?

2 Answers  

what is relation between HP & BHP

3 Answers   Usha Martin,

what is the static device rather than xmer which work on same principle as xmer?

18 Answers   NTPC, Power Grid,

What is Control & Relay Panel? And Remote Control Center?

0 Answers   L&T,

Radio Carbon dating is used in a) find diseases b) find the age of relics c) find the carbon content in the atmosphere d) none of these

2 Answers  

How many VSC based HVDC are there in India and the world

0 Answers  

NOW A DAYS THE POWER SUPPLY IS VERY LOW.SO THE FLURESCENT TUBE LIGHTS ARE VERY DIM.IS THERE IS ANY WAY TO INCREASE ITS BRIGHTNESS?FOR EXAMPLE ANY CONVERTER,CONDENSER?

1 Answers   Bhel,

what is meant by CT burden = 10 VA?

1 Answers  

explain about the electrification in the Indian Railways? ie., how the power is taken and used to drive the train? explain with the block diagram??

1 Answers  

transmission line losses

1 Answers   SVS Constructions,