Answer / vishal

differential relay operates when the phasor difference of two or more electrical quty exceeds a pre determined limit.
in case of power transformers the vectors compared are the current entering and leaving the winding
..if the current entering is more ,indication of fault and relay operates

Answer / vasim

CT connections from primary side & secondary side are
connected together in the differential relay if there is
any difference current or fault current flows there above
the preset time & value of current than the relay operates.

Answer / ashutosh

in differential relay we use to the differential principle
means in it we compare to the similar actuating Quantity.
Differential relays are used to determine the inter turn
Fault

Answer / harish kumar

Differential relay will operate with differential current between phase and neautral of the generator. it is operated with CT CONNECTIONS

how the phase convertor changes the no. of phases

0 Answers  

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hello! can anyone explain to me how a 3 speeds table fan work? what are the factors that are controlling the speed of a normal table fan? Is it by varying the voltage or changing the magnetic field? would appreciate your reply :) thx in advance.

2 Answers  

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As per IS why should the control be taken only from R phase, why not from B or Y phase??!!

2 Answers  

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how the direction relay sense rhe directional fault?it's forward or reverse?

2 Answers  

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IN WHICH MODE THE TRANSFORMER WILL GET A MAXIMUM OUT PUT VOLTAGE. ASKED FOR POWER GRID EXAMINATION STAT-STAR,STAR-DELTA,DELTA-STAR,DELTA-DELTA

3 Answers  

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why we r not earthed Control cable of C.T. terminals

0 Answers   HCC,

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if we convert ampers into kwh or mwh ,which one formula use by us,pls tell me?

3 Answers  

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if i have 5kw,9A,three phase induction motor,if i want to install it 100 meter away from its feeder,how i will culculate cable size for this load.

2 Answers  

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what is the voltage between earth & neutral in 3 phase electrical connection.

0 Answers   Megatron Solutions, SIPL,

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VCB in closed position during opertion if vaccume break then what will happend? it has any protection ?

1 Answers  

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why is only master neutral contactor is made to switch in synchronization of dg sets

4 Answers   Honeywell,

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armature is that part in which current is induced since in dc motor we supply current to the conductor so why we call it armature?

0 Answers  

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