Answer / denzel101

it is a relay that checks for current balance between the
primary and the secondary side of a transformer.it is also
used in other components of the power system like to
protect cables.it is also known as a unit protection as it
does not discriminate with any other protection schemes.the
ct secondary currents that circulates in the coil of this
relay from primary and secondary of the transformer
cancells each other when the system is healthy.when the
fault occurs in a system the balance is disturbed and the
resultant current activate the relay and cause trip.

Answer / manikandan

actually differential relay function in transformer . this
relay monitoring the both side current(primary and seconday)
if current diffrent occure in transformer i t will be trip
the incoming breaker.

Answer / debajit ghosh

The differential relay calculate the current of primary
side and secondery side within the ratio.

Answer / charu manchanda

a differential relay is a protective element which finds the
fault or difference between the primary and secondary current.

Answer / krishnanraman

diff relay generally used for finding the difference in
primary and secondary circuit,the relay connect between the
primary and secondary circuit,normally the current flows
through the primary and through secondary thst time relay
is inoperative mode,when fault occurs the primary changes
as per secondary changed thus relay energise and trip the
circuit

Answer / karthick pdcs

The differential relay which using to check current flow direction.

Answer / durgesh bisht

The differential relay which funtion on failure of the
internal phase and earth fault winding insulation damege
ect.

Answer / gopi

1.buhoolez relay.
2.over current relay.
3.earth leakage relay
4. thermal relay

what is the diffrence between mcb &elcb?

2 Answers   Kahramaa, Synergy,

I have iti elec, 1st aid, and 5 yrs experience in 7.5 mw power plant. Am i eligeble for 11kv license in telangana state..when, how to apply for that.?

0 Answers  

What is nyquist contour?

0 Answers  

how a.c. genarator control power factor when its conected to grid supply by incrising or decresing excitation voltage.

1 Answers  

How is the percentage impedence of a transformer fixed at design stage???

0 Answers  

29 Which of the following breaking method save energy? A regenerative breaking B plugging C dynamic breaking D none of above

1 Answers  

Is there a chance for a motor speed to become negative..?? What is the reason for such a phenomenon.? In that case does the motor works as a generator..???

1 Answers  

WHY BLADE & JOW OF ISOLETOR IN SUBSTATION?

1 Answers   BRG, Voltech,

What is a soft start?

2 Answers   Bhel, jlpl,

Frequency of rotor emf in induction motor is around A same as stator frequency B 50% C 5 % or below D 30%

1 Answers   Bhel,

How to make two bulbs glow Alternatively?

2 Answers  

why are distributed windings generally used in alternators?

0 Answers