Answer / raju

Relays are 3 types
1. Mechanical relay
2. electromechanical relay
3. numerical relay
RELAY WILL SENCE THE FAULT CURRENT THROUGH CURRENT
TRANSFORMER AND IT WILL GIVE A COMMAND/ SIGNAL TO TRIPPING
COIL WHICH WILL TRIP THE BREAKER.

Answer / rvg

Relays are electro-mechanical switches, and it needs some
power either AC/DC to operate the activation coil.
As soon as the coil gets magnetised, the contact attached
will make/break.

Answer / anand shukla

a relay is a sensing device ,which sense the fault and give
signal to the circuit breaker.
relay are many types which is is used in different
conditions.
1- electromagnetic relay
2- thermal overload relay
3-directional & nondirectiobal relay.
4- distance relay
5-mho relay
6-trip circuit supervision relay
7- master trip relay.
in realy some types of contacts are fitted
like no and nc which is interchange when current exceed a
preset value it means when relay operated.

Answer / simpal

Relay is basically a switchgear which senses the fault
occuring in the system and give signal to circuit brekar 2
remove the healthy part from the faulty part

Answer / xxx

Sorry santhosh you are answer is not correct.

Answer / chowndaryaa sehar

Relay is the device which will sense and isolate the fault
by giving a signal to circuit breaker with help of a
controller chip.

Answer / ramanharikrishnan

Relays are working with sensation of fault while
occuring in system.

Answer / sindhuja

Relay works with with inputs of CURRENT... VOLTAGE..
BASICALLY- CURRENT OPERATED AND VOLTAGE OPERATED.
Relay has the element.
if the element sense the I or V .. which crosses the set
valve .. then it operates.

Answer / nagesh

Relay is switch which can be operated by rated power supply
at the rated current...Relay consists of NO and NC contact
which operates depending on the Coil

Ex ---NO contact will become Close when relay is activated
------NC contact will open when relay is energised

Answer / bhumi

Relay is one kind of electro mechanical device with is
intended to sence the fault(the situation which is opposite
to its normal operation & as well as the function of the
relay for which it has been made)& to give command to the
circuit breaker immediately to isolate the faulty part from
the healthy portion to save the entire system.

PLZ SEND ME SOME UNIQUE PROJECT OF ELECTRICAL ENG (B.TECH)

0 Answers  

what is phase angle and how its generate moreever how we measure the phasse angle?

1 Answers  

why the earth conductor in top of the tranmission line ?

2 Answers  

whether Transformer is singly excited or doubly excited machine?

2 Answers  

which of the following motors is non-self starting?

3 Answers   SS Solutions,

can we ran equipment up to 10kw between phase to grounding/ earthing. beside above can we use grounding instead of neutral. .

1 Answers   TNEB Tamil Nadu Electricity Board,

kindly tell me how the load on generator increase by just increasing the fuel of prime mover, as if for exampple 20 MW gen set is synchronized the load ramps from zero to 20 MW gradully and during this procress only fuel of prime mover increases. Which thing determines the load on generator with respect to fuel

4 Answers   Birla,

As a good company employee, can you report your supervisor to the company management if he or she is going against the company interest in his or her actions?

1 Answers   MAHINDRA,

sir please send me iocl written test paper in my e-mail account. i'll be obliged to you........ thank u roshan

0 Answers   IOCL,

why using 3 phase

1 Answers  

what are the differenc between vcb and sf6 breakers

7 Answers   Google,

What is the actual meaning between the energy conservation and energy saving ?

3 Answers